home/lib/login_functions.sh

   1 #
   2
   3 ## open : string -> unit
   4 ##
   5 ## Fork xdg-open so we don't block current terminal session when opening
   6 ## things like pdf files. For example:
   7 ##
   8 ##    open book.pdf
   9 ##
  10 open() {
  11     (xdg-open "$1" &) &
  12 }
  13
  14 ## notify_done : unit -> unit
  15 notify_done() {
  16     local -r _status_code="$?"
  17     local -r _program="$1"
  18     local _timestamp
  19     _timestamp="$(timestamp)"
  20     local -r _msg="$_timestamp [$_program] done "
  21     if [[ "$_status_code" -eq 0 ]]
  22     then
  23         notify-send -u normal "$_msg OK: $_status_code"
  24     else
  25         notify-send -u critical "$_msg ERROR: $_status_code"
  26     fi
  27 }
  28
  29 ## p : string -> unit
  30 p() {
  31     local -r usage='Usage: p [FILE] NAME'
  32     local name
  33     local file
  34
  35     case "$#" in
  36         0)
  37             echo "$usage" >&2
  38             return 1;;
  39         1)
  40             file=~/._p/p
  41             name="$1";;
  42         2)
  43             file="$1"
  44             name="$2";;
  45         *)
  46             echo "$usage" >&2
  47             return 1;;
  48     esac
  49
  50     awk \
  51         -v _s="$name" \
  52         '
  53             BEGIN {_s = tolower(_s)}
  54
  55             # TODO fzf/dmenu select instead of searching:
  56             /^[a-zA-Z]/ && tolower($1) ~ _s && NF >= 2 {
  57                 n++
  58                 s = $1
  59                 p = $NF
  60                 if (NF == 2) {
  61                     e = ""
  62                     u = ""
  63                 } else if (NF == 3) {
  64                     e = $2
  65                     u = ""
  66                 } else {
  67                     e = $2
  68                     u = $3
  69                 } # TODO What would NF > 4 mean?
  70
  71                 printf("%d [O] s:\"%s\", e:\"%s\", u:\"%s\"\n", n, s, e, u) > "/dev/stderr"
  72                 if (match(u, "@")) {
  73                     tmp = e
  74                     e = u
  75                     u = tmp
  76                     printf("%d [C] s:\"%s\", e:\"%s\", u:\"%s\"\n", n, s, e, u) > "/dev/stderr"
  77                 }
  78                 ps[n] = p
  79             }
  80
  81             END {
  82                 printf "%s", ps[n]  # XXX Intentionally avoiding newline in the result.
  83                 if (n == 1) {
  84                     exit 0
  85                 } else if (n == 0) {
  86                     printf "[ERROR] Found nothing.\n" > "/dev/stderr"
  87                     exit 1
  88                 } else if (n > 1) {
  89                     # TODO fzf-select which of the records the user (ahem, me) wants.
  90                     printf "[WARNING] Found more than one record. Selecting the last one.\n" > "/dev/stderr"
  91                     exit 0
  92                 }
  93             }
  94         ' \
  95         "$file" \
  96         | xsel -i -b -t 30000
  97 }
  98
  99 ## web search
 100 ## ws : string -> unit
 101 ws() {
 102     local line search_string0 search_string
 103
 104     search_string0="$*"
 105     case "$search_string0" in
 106         '')
 107             while read -r line; do
 108                 search_string="${search_string} ${line}"
 109             done;;
 110          *)
 111             search_string="$search_string0";;
 112     esac
 113
 114     firefox --search "$search_string"
 115 }
 116
 117
 118 ## dictionary
 119 ## d : string -> string list
 120 d() {
 121     local -r word=$(fzf < /usr/share/dict/words)
 122     dict "$word"
 123 }
 124
 125 ## shell_activity_report : (mon | dow) -> string list
 126 shell_activity_report() {
 127     # TODO: optional concrete number output
 128     # TODO: optional combinations of granularities: hour, weekday, month, year
 129     local group_by="$1"
 130     case "$group_by" in
 131         'mon') ;;
 132         'dow') ;;
 133         '') group_by='dow';;
 134         *)
 135             echo "Usage: $0 [mon|dow]" >&2
 136             kill -INT $$
 137     esac
 138     history \
 139     | awk -v group_by="$group_by" '
 140         function date2dow(y, m, d,    _t, _i) {
 141             # Contract:
 142             #   y > 1752,  1 <= m <= 12.
 143             # Source:
 144             #   Sakamoto`s methods
 145             #   https://en.wikipedia.org/wiki/Determination_of_the_day_of_the_week#Sakamoto%27s_methods
 146             _t[ 0] = 0
 147             _t[ 1] = 3
 148             _t[ 2] = 2
 149             _t[ 3] = 5
 150             _t[ 4] = 0
 151             _t[ 5] = 3
 152             _t[ 6] = 5
 153             _t[ 7] = 1
 154             _t[ 8] = 4
 155             _t[ 9] = 6
 156             _t[10] = 2
 157             _t[11] = 4
 158             y -= m < 3
 159             _i = int(y + y/4 - y/100 + y/400 + _t[m - 1] + d) % 7
 160             _i = _i == 0 ? 7 : _i  # Make Sunday last
 161             return _i
 162
 163         }
 164
 165         {
 166             # NOTE: $2 & $3 are specific to oh-my-zsh history output
 167             date = $2
 168             time = $3
 169             d_fields = split(date, d, "-")
 170             t_fields = split(time, t, ":")
 171             if (t_fields && d_fields) {
 172                 # +0 to coerce number from string
 173                 year  = d[1] + 0
 174                 month = d[2] + 0
 175                 day   = d[3] + 0
 176                 hour = t[1] + 0
 177                 dow = date2dow(year, month, day)
 178                 g = group_by == "mon" ? month : dow  # dow is default
 179                 c = count[g, hour]++
 180             }
 181             if (c > max)
 182                 max = c
 183         }
 184
 185         END {
 186             w[1] = "Monday"
 187             w[2] = "Tuesday"
 188             w[3] = "Wednesday"
 189             w[4] = "Thursday"
 190             w[5] = "Friday"
 191             w[6] = "Saturday"
 192             w[7] = "Sunday"
 193
 194             m[ 1] = "January"
 195             m[ 2] = "February"
 196             m[ 3] = "March"
 197             m[ 4] = "April"
 198             m[ 5] = "May"
 199             m[ 6] = "June"
 200             m[ 7] = "July"
 201             m[ 8] = "August"
 202             m[ 9] = "September"
 203             m[10] = "October"
 204             m[11] = "November"
 205             m[12] = "December"
 206
 207             n = group_by == "mon" ? 12 : 7  # dow is default
 208
 209             for (gid = 1; gid <= n; gid++) {
 210                 group = group_by == "mon" ? m[gid] : w[gid]
 211                 printf "%s\n", group;
 212                 for (hour=0; hour<24; hour++) {
 213                     c = count[gid, hour]
 214                     printf "  %2d ", hour
 215                     for (i = 1; i <= (c * 100) / max; i++)
 216                         printf "|"
 217                     printf "\n"
 218                 }
 219             }
 220         }'
 221 }
 222
 223 ## top_commands : unit -> (command:string * count:number * bar:string) list
 224 top_commands() {
 225     history \
 226     | awk '
 227         {
 228             count[$4]++
 229         }
 230
 231         END {
 232             for (cmd in count)
 233                 print count[cmd], cmd
 234         }' \
 235     | sort -n -r -k 1 \
 236     | head -50 \
 237     | awk '
 238         {
 239             cmd[NR] = $2
 240             c = count[NR] = $1 + 0  # + 0 to coerce number from string
 241             if (c > max)
 242                 max = c
 243         }
 244
 245         END {
 246             for (i = 1; i <= NR; i++) {
 247                 c = count[i]
 248                 printf "%s %d ", cmd[i], c
 249                 scaled = (c * 100) / max
 250                 for (j = 1; j <= scaled; j++)
 251                     printf "|"
 252                 printf "\n"
 253             }
 254         }' \
 255     | column -t
 256 }
 257
 258 ## Top Disk-Using directories
 259 ## TODO: Consider using numfmt instead of awk
 260 ## tdu : path-string -> (size:number * directory:path-string) list
 261 tdu() {
 262     local -r root_path="$1"
 263
 264     du "$root_path" \
 265     | awk '
 266         {
 267             size = $1
 268             path = $0
 269             sub("^" $1 "\t+", "", path)
 270             paths[path] = size
 271             if (size > max)
 272                 max = size
 273         }
 274
 275         END {
 276             for (path in paths) {
 277                 size = paths[path]
 278                 pct = 100 * (size / max)
 279                 gb = size / 1024 / 1024
 280                 printf("%6.2f %3d%% %s\n", gb, pct, path)
 281             }
 282         }
 283     ' \
 284     | sort -r -n -k 1 \
 285     | head -50 \
 286     | tac
 287     # A slight optimization: head can exit before traversing the full input.
 288 }
 289
 290 ## Top Disk-Using Files
 291 ## tduf : path-string list -> (size:number * file:path-string) list
 292 tduf() {
 293     find "$@" -type f -printf '%s\t%p\0' \
 294     | sort -z -n -k 1 \
 295     | tail -z -n 50 \
 296     | gawk -v RS='\0' '
 297         {
 298             size = $1
 299             path = $0
 300             sub("^" $1 "\t+", "", path)
 301             gb = size / 1024 / 1024 / 1024
 302             printf("%f\t%s\n", gb, path)
 303         }'
 304 }
 305
 306 # Most-recently modified file system objects
 307 ## recent : ?(path-string list) -> path-string list
 308 recent() {
 309     # NOTES:
 310     # - %T+ is a GNU extension;
 311     # - gawk is able to split records on \0, while awk cannot.
 312     find "$@" -printf '%T@ %T+ %p\0' \
 313     | tee >(gawk -v RS='\0' 'END { printf("[INFO] Total found: %d\n", NR); }') \
 314     | sort -z -k 1 -n -r \
 315     | head -n "$(stty size | awk 'NR == 1 {print $1 - 5}')" -z \
 316     | gawk -v RS='\0' '
 317         {
 318             sub("^" $1 " +", "")  # Remove epoch time
 319             sub("+", " ")         # Blank-out the default separator
 320             sub("\\.[0-9]+", "")  # Remove fractional seconds
 321             print
 322         }'
 323 }
 324
 325 ## recent_dirs : ?(path-string list) -> path-string list
 326 recent_dirs() {
 327     recent "$@" -type d
 328 }
 329
 330 ## recent_files : ?(path-string list) -> path-string list
 331 recent_files() {
 332     recent "$@" -type f
 333 }
 334
 335 ## pa_def_sink : unit -> string
 336 pa_def_sink() {
 337     pactl info | awk '/^Default Sink:/ {print $3}'
 338 }
 339
 340 ## void_pkgs : ?(string) -> json
 341 void_pkgs() {
 342     curl "https://xq-api.voidlinux.org/v1/query/x86_64?q=$1" | jq '.data'
 343 }
 344
 345 ## Colorful man
 346 ## man : string -> string
 347 man() {
 348     # mb: begin blink
 349     # md: begin bold
 350     # me: end   bold, blink and underline
 351     #
 352     # so: begin standout (reverse video)
 353     # se: end   standout
 354     #
 355     # us: begin underline
 356     # ue: end   underline
 357
 358     LESS_TERMCAP_md=$'\e[01;30m' \
 359     LESS_TERMCAP_me=$'\e[0m' \
 360     LESS_TERMCAP_so=$'\e[01;44;33m' \
 361     LESS_TERMCAP_se=$'\e[0m' \
 362     LESS_TERMCAP_us=$'\e[01;33m' \
 363     LESS_TERMCAP_ue=$'\e[0m' \
 364     command man "$@"
 365 }
 366
 367 ## new experiment
 368 ## x : string list -> unit
 369 x() {
 370     cd "$(~/bin/x $@)" || kill -INT $$
 371 }
 372
 373 ## ocaml repl
 374 ## hump : unit -> unit
 375 hump() {
 376     ledit -l "$(stty size | awk '{print $2}')" ocaml $@
 377 }
 378
 379 ## search howtos
 380 ## howto : unit -> string
 381 howto() {
 382     cat "$(find  ~/arc/doc/HOWTOs -mindepth 1 -maxdepth 1 | sort | fzf)"
 383 }
 384
 385 _yt() {
 386     local -r base_dir="$1"
 387     local -r uri="$2"
 388     local -r opts="$3"
 389
 390     local -r yt=youtube-dl
 391     local -r id=$("$yt" --get-id "$uri")
 392     local -r title=$("$yt" --get-title "$uri" | sed 's/[^А-Яа-яA-Za-z0-9._-]/_/g')
 393     local -r dir="${base_dir}/${title}--${id}"
 394
 395     mkdir -p "$dir"
 396     cd "$dir" || kill -INT $$
 397     echo "$uri" > 'uri'
 398     "$yt" $opts -c --write-all-thumbnails --write-description --write-info-json "$uri"
 399 }
 400
 401 yt_audio() {
 402     local -r uri="$1"
 403     _yt "${DIR_YOUTUBE_AUDIO}/individual" "$uri" '-f 140'
 404 }
 405
 406 yt_video() {
 407     local -r uri="$1"
 408     _yt "${DIR_YOUTUBE_VIDEO}/individual" "$uri"
 409 }
 410
 411 gh_fetch_repos() {
 412     local -r user_type="$1"
 413     local -r user_name="$2"
 414
 415     curl "https://api.github.com/$user_type/$user_name/repos?page=1&per_page=10000"
 416 }
 417
 418 gh_clone() {
 419     local -r gh_user_type="$1"
 420     local -r gh_user_name="$2"
 421
 422     local -r gh_dir="${DIR_GITHUB}/${gh_user_name}"
 423     mkdir -p "$gh_dir"
 424     cd "$gh_dir" || kill -INT $$
 425     gh_fetch_repos "$gh_user_type" "$gh_user_name" \
 426     | jq --raw-output '.[] | select(.fork | not) | .clone_url' \
 427     | parallel -j 25 \
 428     git clone {}
 429 }
 430
 431 gh_clone_user() {
 432     gh_clone 'users' "$1"
 433 }
 434
 435 gh_clone_org() {
 436     gh_clone 'orgs' "$1"
 437 }
 438
 439 gh_clone_repo() {
 440     gh_username=$(echo "$1" | awk -F / '"$1 == "https" && $3 == github.com" {print $4}')
 441     gh_dir="${DIR_GITHUB}/${gh_username}"
 442     mkdir -p "$gh_dir"
 443     cd "$gh_dir" || kill -INT $$
 444     git clone "$1"
 445 }
 446
 447 bar() {
 448     local -r len="${1:-79}" # 1st arg or 79.
 449     local -r char="${2:--}" # 2nd arg or a dash.
 450     for _ in {1.."$len"}; do
 451         printf '%c' "$char";
 452     done
 453 }
 454
 455 daily_todo_file_template() {
 456 cat << EOF
 457 ===============================================================================
 458 $(date '+%F %A')
 459 ===============================================================================
 460
 461 -------------------------------------------------------------------------------
 462 TODAY
 463 -------------------------------------------------------------------------------
 464
 465
 466 -------------------------------------------------------------------------------
 467 CURRENT
 468 -------------------------------------------------------------------------------
 469
 470
 471 -------------------------------------------------------------------------------
 472 BLOCKED
 473 -------------------------------------------------------------------------------
 474
 475
 476 -------------------------------------------------------------------------------
 477 BACKLOG
 478 -------------------------------------------------------------------------------
 479 EOF
 480 }
 481
 482 today() {
 483     local date
 484     date="$(date +%F)"
 485     local -r dir="$DIR_TODO/daily"
 486     local -r file="$dir/$date.txt"
 487
 488     mkdir -p "$dir"
 489     if [ ! -f "$file" ]
 490     then
 491         daily_todo_file_template > "$file"
 492     fi
 493     cd "$DIR_TODO" && "$EDITOR" $EDITOR_ARGS "$file"
 494 }
 495
 496 todo() {
 497     cd "$DIR_TODO" && "$EDITOR" TODO
 498 }
 499
 500 work_log_template() {
 501 cat << EOF
 502 $(date '+%F %A')
 503 ==========
 504
 505 Morning report
 506 --------------
 507
 508 ### Prev
 509
 510 ### Curr
 511
 512 ### Next
 513
 514 ### Blockers
 515
 516 Day's notes
 517 -----------
 518 EOF
 519 }
 520
 521 work_log() {
 522     mkdir -p "$DIR_WORK_LOG"
 523     local -r file_work_log_today="${DIR_WORK_LOG}/daily-$(date +%F).md"
 524     if [ ! -f "$file_work_log_today" ]
 525     then
 526         work_log_template > "$file_work_log_today"
 527     fi
 528     vim -c 'set spell' "$file_work_log_today"
 529
 530 }
 531
 532 note() {
 533     mkdir -p "$DIR_NOTES"
 534     vim -c 'set spell' "$DIR_NOTES/$(date +'%Y_%m_%d--%H_%M_%S%z')--$1.md"
 535 }
 536
 537 _bt_devs_infos() {
 538     # grep's defintion of a line does not include \r, wile awk's does and
 539     # which bluetoothctl outputs
 540     awk '/^Device +/ {print $2}' \
 541     | xargs -I% sh -c 'echo info % | bluetoothctl' \
 542     | awk '/^Device |^\t[A-Z][A-Za-z0-9]+: /'
 543 }
 544
 545 bt_devs_paired() {
 546     echo 'paired-devices' | bluetoothctl | _bt_devs_infos
 547 }
 548
 549 bt_devs() {
 550     echo 'devices' | bluetoothctl | _bt_devs_infos
 551 }
 552
 553 run() {
 554     local -r stderr="$(mktemp)"
 555
 556     local code urgency
 557
 558     $@ 2> >(tee "$stderr")
 559     code="$?"
 560     case "$code" in
 561         0) urgency='normal';;
 562         *) urgency='critical'
 563     esac
 564     notify-send -u "$urgency" "Job done: $code" "$(cat $stderr)"
 565     rm "$stderr"
 566 }
 567
 568 bar_gauge() {
 569     awk "$@" '
 570         BEGIN {
 571             # CLI options
 572             width    = width    ? width    : 80
 573             ch_left  = ch_left  ? ch_left  : "["
 574             ch_right = ch_right ? ch_right : "]"
 575             ch_blank = ch_blank ? ch_blank : "-"
 576             ch_used  = ch_used  ? ch_used  : "|"
 577             num      = num      ? 1        : 0
 578             pct      = pct      ? 1        : 0
 579         }
 580
 581         {
 582             cur = $1
 583             max = $2
 584             lab = $3
 585
 586             cur_scaled = num_scale(cur, max, 1, width)
 587
 588             printf \
 589                 "%s%s%s%s", \
 590                 lab ? lab         " " : "", \
 591                 num ? cur "/" max " " : "", \
 592                 pct ? sprintf("%3.0f%% ", cur / max * 100) : "", \
 593                 ch_left
 594             for (i=1; i<=width; i++) {
 595                 c = i <= cur_scaled ? ch_used : ch_blank
 596                 printf "%s", c
 597             }
 598             printf "%s\n", ch_right
 599         }
 600
 601         function num_scale(src_cur, src_max, dst_min, dst_max) {
 602             return dst_min + ((src_cur * (dst_max - dst_min)) / src_max)
 603         }
 604     '
 605 }
 606
 607 flat_top_5() {
 608     sort -n -k 1 -r \
 609     | head -5 \
 610     | awk '
 611         {
 612             cur  = $1
 613             max  = $2
 614             name = $3
 615             pct  = cur / max * 100
 616             printf "%s%s %.2f%%", sep, name, pct
 617             sep = ",  "
 618         }
 619
 620         END {printf "\n"}
 621         '
 622 }
 623
 624 internet_addr() {
 625     curl --silent --show-error --max-time "${1:=1}" 'https://api.ipify.org' 2>&1
 626 }
 627
 628 status_batt() {
 629     case "$(uname)" in
 630         'Linux')
 631             if which upower > /dev/null
 632             then
 633                 upower --dump \
 634                 | awk '
 635                     /^Device:[ \t]+/ {
 636                         device["path"] = $2
 637                         next
 638                     }
 639
 640                     /  battery/ && device["path"] {
 641                         device["is_battery"] = 1
 642                         next
 643                     }
 644
 645                     /    percentage:/ && device["is_battery"] {
 646                         device["battery_percentage"] = $2
 647                         sub("%$", "", device["battery_percentage"])
 648                         next
 649                     }
 650
 651                     /^$/ {
 652                         if (device["is_battery"] && device["path"] == "/org/freedesktop/UPower/devices/DisplayDevice")
 653                             print device["battery_percentage"], 100, "batt"
 654                         delete device
 655                     }
 656                 '
 657             fi
 658         ;;
 659     esac
 660 }
 661
 662 indent() {
 663     awk -v unit="$1" '{printf "%s%s\n", unit, $0}'
 664 }
 665
 666 status() {
 667     local -r indent_unit='    '
 668
 669     uname -srvmo
 670     hostname | figlet
 671     uptime
 672
 673     echo
 674
 675     echo 'accounting'
 676
 677     printf '%stmux\n' "$indent_unit"
 678     ps -eo comm,cmd \
 679     | awk '
 680         # Expecting lines like:
 681         #     "tmux: server    tmux -L pistactl new-session -d -s pistactl"
 682         #     "tmux: client    tmux -L foo"
 683         #     "tmux: client    tmux -Lbar"
 684         /^tmux:/ {
 685             # XXX This of course assumes pervasive usage of -L
 686             # TODO Handle -S
 687             role=$2
 688             split($0, sides_of_L, "-L")
 689             split(sides_of_L[2], words_right_of_L, FS)
 690             sock=words_right_of_L[1]
 691             if (!sock) {
 692                 sock = "default"
 693             } else {
 694                 sock = "\"" sock "\""
 695             }
 696             roles[role]++
 697             socks[sock]++
 698             count[role, sock]++
 699         }
 700
 701         END {
 702             for (sock in socks) {
 703                 clients = count["client", sock]
 704                 printf "%s ", sock
 705                 if (clients) {
 706                     printf "<-> %d", clients
 707                 }
 708                 printf "\n"
 709             }
 710             printf "\n"
 711         }' \
 712     | sort \
 713     | column -t \
 714     | indent "${indent_unit}${indent_unit}"
 715
 716     echo
 717
 718     printf '%sprocs by user\n' "${indent_unit}"
 719     ps -eo user \
 720     | awk '
 721         NR > 1 {
 722             count_by_user[$1]++
 723             total++
 724         }
 725
 726         END {
 727             for (user in count_by_user)
 728                 print count_by_user[user], total, user
 729         }
 730         ' \
 731     | flat_top_5 \
 732     | indent "${indent_unit}${indent_unit}"
 733
 734     echo
 735
 736     echo 'resources'
 737     (
 738         free | awk '$1 == "Mem:" {print $3, $2, "mem"}'
 739         df ~ | awk 'NR == 2 {print $3, $3 + $4, "disk"}'
 740         status_batt
 741     ) \
 742     | bar_gauge -v width=60 -v pct=1 \
 743     | column -t \
 744     | indent "$indent_unit"
 745
 746     echo
 747
 748     printf '%smem by proc\n' "$indent_unit"
 749     ps -eo rss,comm \
 750     | awk -v total="$(free | awk '$1 == "Mem:" {print $2; exit}')" '
 751         NR > 1 {
 752             rss = $1
 753             proc = $2
 754             by_proc[proc] += rss
 755         }
 756
 757         END {
 758             for (proc in by_proc)
 759                 print by_proc[proc], total, proc
 760             }
 761         ' \
 762         | flat_top_5 \
 763         | indent "${indent_unit}${indent_unit}"
 764
 765     echo
 766
 767     local _dir temp_input label_file label
 768
 769     printf '%sthermal\n' "$indent_unit"
 770     for _dir in /sys/class/hwmon/hwmon*; do
 771         cat "$_dir"/name
 772         find "$_dir"/ -name 'temp*_input' \
 773             | while read -r temp_input; do
 774                 label_file=${temp_input//_input/_label}
 775                 if [ -f "$label_file" ]; then
 776                     label=$(< "$label_file")
 777                 else
 778                     label=''
 779                 fi
 780                 awk -v label="$label" '{
 781                         if (label)
 782                             label = sprintf(" (%s)", label)
 783                             printf("%.2f°C%s\n", $1 / 1000, label)
 784                     }' \
 785                     "$temp_input"
 786             done \
 787             | sort \
 788             | indent "$indent_unit"
 789     done \
 790     | indent "${indent_unit}${indent_unit}"
 791
 792     echo 'net'
 793     #local -r internet_addr=$(internet_addr 0.5)
 794     #local -r internet_ptr=$(host -W 1 "$internet_addr" | awk 'NR == 1 {print $NF}' )
 795
 796     #echo "${indent_unit}internet"
 797     #echo "${indent_unit}${indent_unit}$internet_addr  $internet_ptr"
 798     echo "${indent_unit}if"
 799     (ifconfig; iwconfig) 2> /dev/null \
 800     | awk '
 801         /^[^ ]/ {
 802             device = $1
 803             sub(":$", "", device)
 804             if ($4 ~ "ESSID:") {
 805                 _essid = $4
 806                 sub("^ESSID:\"", "", _essid)
 807                 sub("\"$", "", _essid)
 808                 essid[device] = _essid
 809             }
 810             next
 811         }
 812
 813         /^ / && $1 == "inet" {
 814             address[device] = $2
 815             next
 816         }
 817
 818         /^ +Link Quality=[0-9]+\/[0-9]+ +Signal level=/ {
 819             split($2, lq_parts_eq, "=")
 820             split(lq_parts_eq[2], lq_parts_slash, "/")
 821             cur = lq_parts_slash[1]
 822             max = lq_parts_slash[2]
 823             link[device] = cur / max * 100
 824             next
 825         }
 826
 827         END {
 828             for (device in address)
 829                 if (device != "lo") {
 830                     l = link[device]
 831                     e = essid[device]
 832                     l = l ? sprintf("%.0f%%", l) : "--"
 833                     e = e ? e : "--"
 834                     print device, address[device], e, l
 835                 }
 836         }
 837         ' \
 838     | column -t \
 839     | indent "${indent_unit}${indent_unit}"
 840
 841     # WARN: ensure: $USER ALL=(ALL) NOPASSWD:/bin/netstat
 842
 843     echo "${indent_unit}-->"
 844
 845     sudo -n netstat -tulnp \
 846     | awk -v indent="${indent_unit}${indent_unit}" '
 847         NR > 2 && ((/^tcp/ && proc = $7) || (/^udp/ && proc = $6)) {
 848             protocol = $1
 849             addr = $4
 850             port = a[split(addr, a, ":")]
 851             name = p[split(proc, p, "/")]
 852             names[name] = 1
 853             protocols[protocol] = 1
 854             if (!seen[protocol, name, port]++)
 855                 ports[protocol, name, ++seen[protocol, name]] = port
 856         }
 857
 858         END {
 859             for (protocol in protocols) {
 860                 printf "%s%s\t", indent, toupper(protocol)
 861                 for (name in names) {
 862                     if (n = seen[protocol, name]) {
 863                         sep = ""
 864                         printf "%s:", name
 865                         for (i = 1; i <= n; i++) {
 866                             printf "%s%d", sep, ports[protocol, name, i]
 867                             sep = ","
 868                         }
 869                         printf "  "
 870                     }
 871                 }
 872                 printf "\n"
 873             }
 874         }'
 875
 876     echo "${indent_unit}<->"
 877
 878     printf '%sTCP\t' "${indent_unit}${indent_unit}"
 879     sudo -n netstat -tnp \
 880     | awk 'NR > 2 && $6 == "ESTABLISHED" {print $7}' \
 881     | awk '{sub("^[0-9]+/", ""); print}' \
 882     | sort -u \
 883     | xargs \
 884     | column -t
 885
 886     # TODO: iptables summary
 887 }
 888
 889 ssh_invalid_by_addr() {
 890     awk '
 891         /: Invalid user/ && $5 ~ /^sshd/ {
 892             addr=$10 == "port" ? $9 : $10
 893             max++
 894             by_addr[addr]++
 895         }
 896
 897         END {
 898             for (addr in by_addr)
 899                 if ((c = by_addr[addr]) > 1)
 900                     printf "%d %d %s\n", c, max, addr
 901         }
 902         ' \
 903         /var/log/auth.log \
 904         /var/log/auth.log.1 \
 905     | sort -n -k 1 \
 906     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 907     | column -t
 908 }
 909
 910 ssh_invalid_by_day() {
 911     awk '
 912         BEGIN {
 913             m["Jan"] = "01"
 914             m["Feb"] = "02"
 915             m["Mar"] = "03"
 916             m["Apr"] = "04"
 917             m["May"] = "05"
 918             m["Jun"] = "06"
 919             m["Jul"] = "07"
 920             m["Aug"] = "08"
 921             m["Sep"] = "09"
 922             m["Oct"] = "10"
 923             m["Nov"] = "11"
 924             m["Dec"] = "12"
 925         }
 926
 927         /: Invalid user/ && $5 ~ /^sshd/ {
 928             day = m[$1] "-" $2
 929             max++
 930             by_day[day]++
 931         }
 932
 933         END {
 934             for (day in by_day)
 935                 if ((c = by_day[day]) > 1)
 936                     printf "%d %d %s\n", c, max, day
 937         }
 938         ' \
 939         /var/log/auth.log \
 940         /var/log/auth.log.1 \
 941     | sort -k 3 \
 942     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 943     | column -t
 944 }
 945
 946 ssh_invalid_by_user() {
 947     awk '
 948         /: Invalid user/ && $5 ~ /^sshd/ {
 949             user=$8
 950             max++
 951             by_user[user]++
 952         }
 953
 954         END {
 955             for (user in by_user)
 956                 if ((c = by_user[user]) > 1)
 957                     printf "%d %d %s\n", c, max, user
 958         }
 959         ' \
 960         /var/log/auth.log \
 961         /var/log/auth.log.1 \
 962     | sort -n -k 1 \
 963     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 964     | column -t
 965 }
 966
 967 loggers() {
 968     awk '
 969         {
 970             split($5, prog, "[")
 971             sub(":$", "", prog[1]) # if there were no [], than : will is left behind
 972             print prog[1]
 973         }' /var/log/syslog /var/log/syslog.1 \
 974     | awk '
 975         {
 976             n = split($1, path, "/")  # prog may be in path form
 977             prog = path[n]
 978             total++
 979             count[prog]++
 980         }
 981
 982         END {
 983             for (prog in count)
 984                 print count[prog], total, prog
 985         }' \
 986     | sort -n -k 1 \
 987     | bar_gauge -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 988     | column -t
 989 }