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 ## tdu : path-string -> (size:number * directory:path-string) list
 260 tdu() {
 261     local -r root_path="$1"
 262
 263     du -h "$root_path" \
 264     | sort -r -h -k 1 \
 265     | head -50 \
 266     | tac
 267     # A slight optimization: head can exit before traversing the full input.
 268 }
 269
 270 ## Top Disk-Using Files
 271 ## tduf : path-string list -> (size:number * file:path-string) list
 272 tduf() {
 273     find "$@" -type f -printf '%s\t%p\0' \
 274     | sort -z -n -k 1 \
 275     | tail -z -n 50 \
 276     | numfmt -z --to=iec \
 277     | tr '\0' '\n'
 278 }
 279
 280 # Most-recently modified file system objects
 281 ## recent : ?(path-string list) -> path-string list
 282 recent() {
 283     # NOTES:
 284     # - %T+ is a GNU extension;
 285     # - gawk is able to split records on \0, while awk cannot.
 286     find "$@" -printf '%T@ %T+ %p\0' \
 287     | tee >(gawk -v RS='\0' 'END { printf("[INFO] Total found: %d\n", NR); }') \
 288     | sort -z -k 1 -n -r \
 289     | head -n "$(stty size | awk 'NR == 1 {print $1 - 5}')" -z \
 290     | gawk -v RS='\0' '
 291         {
 292             sub("^" $1 " +", "")  # Remove epoch time
 293             sub("+", " ")         # Blank-out the default separator
 294             sub("\\.[0-9]+", "")  # Remove fractional seconds
 295             print
 296         }'
 297 }
 298
 299 ## recent_dirs : ?(path-string list) -> path-string list
 300 recent_dirs() {
 301     recent "$@" -type d
 302 }
 303
 304 ## recent_files : ?(path-string list) -> path-string list
 305 recent_files() {
 306     recent "$@" -type f
 307 }
 308
 309 ## pa_def_sink : unit -> string
 310 pa_def_sink() {
 311     pactl info | awk '/^Default Sink:/ {print $3}'
 312 }
 313
 314 ## void_pkgs : ?(string) -> json
 315 void_pkgs() {
 316     curl "https://xq-api.voidlinux.org/v1/query/x86_64?q=$1" | jq '.data'
 317 }
 318
 319 ## Colorful man
 320 ## man : string -> string
 321 man() {
 322     # mb: begin blink
 323     # md: begin bold
 324     # me: end   bold, blink and underline
 325     #
 326     # so: begin standout (reverse video)
 327     # se: end   standout
 328     #
 329     # us: begin underline
 330     # ue: end   underline
 331
 332     LESS_TERMCAP_md=$'\e[01;30m' \
 333     LESS_TERMCAP_me=$'\e[0m' \
 334     LESS_TERMCAP_so=$'\e[01;44;33m' \
 335     LESS_TERMCAP_se=$'\e[0m' \
 336     LESS_TERMCAP_us=$'\e[01;33m' \
 337     LESS_TERMCAP_ue=$'\e[0m' \
 338     command man "$@"
 339 }
 340
 341 ## new experiment
 342 ## x : string list -> unit
 343 x() {
 344     cd "$(~/bin/x $@)" || kill -INT $$
 345 }
 346
 347 ## ocaml repl
 348 ## hump : unit -> unit
 349 hump() {
 350     ledit -l "$(stty size | awk '{print $2}')" ocaml $@
 351 }
 352
 353 ## search howtos
 354 ## howto : unit -> string
 355 howto() {
 356     cat "$(find  ~/arc/doc/HOWTOs -mindepth 1 -maxdepth 1 | sort | fzf)"
 357 }
 358
 359 _yt() {
 360     local -r base_dir="$1"
 361     local -r uri="$2"
 362     local -r opts="$3"
 363
 364     local -r yt=youtube-dl
 365     local -r id=$("$yt" --get-id "$uri")
 366     local -r title=$("$yt" --get-title "$uri" | sed 's/[^А-Яа-яA-Za-z0-9._-]/_/g')
 367     local -r dir="${base_dir}/${title}--${id}"
 368
 369     mkdir -p "$dir"
 370     cd "$dir" || kill -INT $$
 371     echo "$uri" > 'uri'
 372     "$yt" $opts -c --write-all-thumbnails --write-description --write-info-json "$uri"
 373 }
 374
 375 yt_audio() {
 376     local -r uri="$1"
 377     _yt "${DIR_YOUTUBE_AUDIO}/individual" "$uri" '-f 140'
 378 }
 379
 380 yt_video() {
 381     local -r uri="$1"
 382     _yt "${DIR_YOUTUBE_VIDEO}/individual" "$uri"
 383 }
 384
 385 gh_fetch_repos() {
 386     local -r user_type="$1"
 387     local -r user_name="$2"
 388
 389     curl "https://api.github.com/$user_type/$user_name/repos?page=1&per_page=10000"
 390 }
 391
 392 gh_clone() {
 393     local -r gh_user_type="$1"
 394     local -r gh_user_name="$2"
 395
 396     local -r gh_dir="${DIR_GITHUB}/${gh_user_name}"
 397     mkdir -p "$gh_dir"
 398     cd "$gh_dir" || kill -INT $$
 399     gh_fetch_repos "$gh_user_type" "$gh_user_name" \
 400     | jq --raw-output '.[] | select(.fork | not) | .clone_url' \
 401     | parallel -j 25 \
 402     git clone {}
 403 }
 404
 405 gh_clone_user() {
 406     gh_clone 'users' "$1"
 407 }
 408
 409 gh_clone_org() {
 410     gh_clone 'orgs' "$1"
 411 }
 412
 413 gh_clone_repo() {
 414     gh_username=$(echo "$1" | awk -F / '"$1 == "https" && $3 == github.com" {print $4}')
 415     gh_dir="${DIR_GITHUB}/${gh_username}"
 416     mkdir -p "$gh_dir"
 417     cd "$gh_dir" || kill -INT $$
 418     git clone "$1"
 419 }
 420
 421 bar() {
 422     local -r len="${1:-79}" # 1st arg or 79.
 423     local -r char="${2:--}" # 2nd arg or a dash.
 424     for _ in {1.."$len"}; do
 425         printf '%c' "$char";
 426     done
 427 }
 428
 429 daily_todo_file_template() {
 430 cat << EOF
 431 ===============================================================================
 432 $(date '+%F %A')
 433 ===============================================================================
 434
 435 -------------------------------------------------------------------------------
 436 TODAY
 437 -------------------------------------------------------------------------------
 438
 439
 440 -------------------------------------------------------------------------------
 441 CURRENT
 442 -------------------------------------------------------------------------------
 443
 444
 445 -------------------------------------------------------------------------------
 446 BLOCKED
 447 -------------------------------------------------------------------------------
 448
 449
 450 -------------------------------------------------------------------------------
 451 BACKLOG
 452 -------------------------------------------------------------------------------
 453 EOF
 454 }
 455
 456 today() {
 457     local date
 458     date="$(date +%F)"
 459     local -r dir="$DIR_TODO/daily"
 460     local -r file="$dir/$date.txt"
 461
 462     mkdir -p "$dir"
 463     if [ ! -f "$file" ]
 464     then
 465         daily_todo_file_template > "$file"
 466     fi
 467     cd "$DIR_TODO" && "$EDITOR" $EDITOR_ARGS "$file"
 468 }
 469
 470 todo() {
 471     cd "$DIR_TODO" && "$EDITOR" TODO
 472 }
 473
 474 work_log_template() {
 475 cat << EOF
 476 $(date '+%F %A')
 477 ==========
 478
 479 Morning report
 480 --------------
 481
 482 ### Prev
 483
 484 ### Curr
 485
 486 ### Next
 487
 488 ### Blockers
 489
 490 Day's notes
 491 -----------
 492 EOF
 493 }
 494
 495 work_log() {
 496     mkdir -p "$DIR_WORK_LOG"
 497     local -r file_work_log_today="${DIR_WORK_LOG}/daily-$(date +%F).md"
 498     if [ ! -f "$file_work_log_today" ]
 499     then
 500         work_log_template > "$file_work_log_today"
 501     fi
 502     vim -c 'set spell' "$file_work_log_today"
 503
 504 }
 505
 506 note() {
 507     mkdir -p "$DIR_NOTES"
 508     vim -c 'set spell' "$DIR_NOTES/$(date +'%Y_%m_%d--%H_%M_%S%z')--$1.md"
 509 }
 510
 511 _bt_devs_infos() {
 512     # grep's defintion of a line does not include \r, wile awk's does and
 513     # which bluetoothctl outputs
 514     awk '/^Device +/ {print $2}' \
 515     | xargs -I% sh -c 'echo info % | bluetoothctl' \
 516     | awk '/^Device |^\t[A-Z][A-Za-z0-9]+: /'
 517 }
 518
 519 bt_devs_paired() {
 520     echo 'paired-devices' | bluetoothctl | _bt_devs_infos
 521 }
 522
 523 bt_devs() {
 524     echo 'devices' | bluetoothctl | _bt_devs_infos
 525 }
 526
 527 run() {
 528     local -r stderr="$(mktemp)"
 529
 530     local code urgency
 531
 532     $@ 2> >(tee "$stderr")
 533     code="$?"
 534     case "$code" in
 535         0) urgency='normal';;
 536         *) urgency='critical'
 537     esac
 538     notify-send -u "$urgency" "Job done: $code" "$(cat $stderr)"
 539     rm "$stderr"
 540 }
 541
 542 bar_gauge() {
 543     awk "$@" '
 544         BEGIN {
 545             # CLI options
 546             width    = width    ? width    : 80
 547             ch_left  = ch_left  ? ch_left  : "["
 548             ch_right = ch_right ? ch_right : "]"
 549             ch_blank = ch_blank ? ch_blank : "-"
 550             ch_used  = ch_used  ? ch_used  : "|"
 551             num      = num      ? 1        : 0
 552             pct      = pct      ? 1        : 0
 553         }
 554
 555         {
 556             cur = $1
 557             max = $2
 558             lab = $3
 559
 560             cur_scaled = num_scale(cur, max, 1, width)
 561
 562             printf \
 563                 "%s%s%s%s", \
 564                 lab ? lab         " " : "", \
 565                 num ? cur "/" max " " : "", \
 566                 pct ? sprintf("%3.0f%% ", cur / max * 100) : "", \
 567                 ch_left
 568             for (i=1; i<=width; i++) {
 569                 c = i <= cur_scaled ? ch_used : ch_blank
 570                 printf "%s", c
 571             }
 572             printf "%s\n", ch_right
 573         }
 574
 575         function num_scale(src_cur, src_max, dst_min, dst_max) {
 576             return dst_min + ((src_cur * (dst_max - dst_min)) / src_max)
 577         }
 578     '
 579 }
 580
 581 flat_top_5() {
 582     sort -n -k 1 -r \
 583     | head -5 \
 584     | awk '
 585         {
 586             cur  = $1
 587             max  = $2
 588             name = $3
 589             pct  = cur / max * 100
 590             printf "%s%s %.2f%%", sep, name, pct
 591             sep = ",  "
 592         }
 593
 594         END {printf "\n"}
 595         '
 596 }
 597
 598 internet_addr() {
 599     curl --silent --show-error --max-time "${1:=1}" 'https://api.ipify.org' 2>&1
 600 }
 601
 602 status_batt() {
 603     case "$(uname)" in
 604         'Linux')
 605             if which upower > /dev/null
 606             then
 607                 upower --dump \
 608                 | awk '
 609                     /^Device:[ \t]+/ {
 610                         device["path"] = $2
 611                         next
 612                     }
 613
 614                     /  battery/ && device["path"] {
 615                         device["is_battery"] = 1
 616                         next
 617                     }
 618
 619                     /    percentage:/ && device["is_battery"] {
 620                         device["battery_percentage"] = $2
 621                         sub("%$", "", device["battery_percentage"])
 622                         next
 623                     }
 624
 625                     /^$/ {
 626                         if (device["is_battery"] && device["path"] == "/org/freedesktop/UPower/devices/DisplayDevice")
 627                             print device["battery_percentage"], 100, "batt"
 628                         delete device
 629                     }
 630                 '
 631             fi
 632         ;;
 633     esac
 634 }
 635
 636 indent() {
 637     awk -v unit="$1" '{printf "%s%s\n", unit, $0}'
 638 }
 639
 640 status() {
 641     local -r indent_unit='    '
 642
 643     uname -srvmo
 644     hostname | figlet
 645     uptime
 646
 647     echo
 648
 649     echo 'accounting'
 650
 651     # TODO Bring back seesion and client listing, but per server/socket.
 652     printf '%stmux\n' "$indent_unit"
 653     ps -eo comm,cmd \
 654     | awk '
 655         # Expecting lines like:
 656         #     "tmux: server    tmux -L pistactl new-session -d -s pistactl"
 657         #     "tmux: client    tmux -L foo"
 658         #     "tmux: client    tmux -Lbar"
 659         #     "tmux: client    tmux"
 660         #     "tmux: server    tmux -L foo -S bar" <-- -S takes precedence
 661         /^tmux:/ {
 662             # XXX This of course assumes pervasive usage of -L
 663             # TODO Handle -S
 664             role=$2
 665
 666             split($0, sides_of_S, "-S")
 667             split(sides_of_S[2], words_right_of_S, FS)
 668
 669             split($0, sides_of_L, "-L")
 670             split(sides_of_L[2], words_right_of_L, FS)
 671
 672             if (words_right_of_S[1]) {
 673                 sock = "path." words_right_of_S[1]
 674             } else if (words_right_of_L[1]) {
 675                 sock = "name." words_right_of_L[1]
 676             } else {
 677                 sock = "default"
 678             }
 679
 680             roles[role]++
 681             socks[sock]++
 682             count[role, sock]++
 683         }
 684
 685         END {
 686             for (sock in socks) {
 687                 clients = count["client", sock]
 688                 printf "%s ", sock
 689                 if (clients) {
 690                     printf "<-> %d", clients
 691                 }
 692                 printf "\n"
 693             }
 694             printf "\n"
 695         }' \
 696     | sort \
 697     | column -t \
 698     | indent "${indent_unit}${indent_unit}"
 699
 700     echo
 701
 702     printf '%sprocs by user\n' "${indent_unit}"
 703     ps -eo user \
 704     | awk '
 705         NR > 1 {
 706             count_by_user[$1]++
 707             total++
 708         }
 709
 710         END {
 711             for (user in count_by_user)
 712                 print count_by_user[user], total, user
 713         }
 714         ' \
 715     | flat_top_5 \
 716     | indent "${indent_unit}${indent_unit}"
 717
 718     echo
 719
 720     echo 'resources'
 721     (
 722         free | awk '$1 == "Mem:" {print $3, $2, "mem"}'
 723         df ~ | awk 'NR == 2 {print $3, $3 + $4, "disk"}'
 724         status_batt
 725     ) \
 726     | bar_gauge -v width=60 -v pct=1 \
 727     | column -t \
 728     | indent "$indent_unit"
 729
 730     echo
 731
 732     printf '%smem by proc\n' "$indent_unit"
 733     ps -eo rss,comm \
 734     | awk -v total="$(free | awk '$1 == "Mem:" {print $2; exit}')" '
 735         NR > 1 {
 736             rss = $1
 737             proc = $2
 738             by_proc[proc] += rss
 739         }
 740
 741         END {
 742             for (proc in by_proc)
 743                 print by_proc[proc], total, proc
 744             }
 745         ' \
 746         | flat_top_5 \
 747         | indent "${indent_unit}${indent_unit}"
 748
 749     echo
 750
 751     local _dir temp_input label_file label
 752
 753     printf '%sthermal\n' "$indent_unit"
 754     for _dir in /sys/class/hwmon/hwmon*; do
 755         cat "$_dir"/name
 756         find "$_dir"/ -name 'temp*_input' \
 757             | while read -r temp_input; do
 758                 label_file=${temp_input//_input/_label}
 759                 if [ -f "$label_file" ]; then
 760                     label=$(< "$label_file")
 761                 else
 762                     label=''
 763                 fi
 764                 awk -v label="$label" '{
 765                         if (label)
 766                             label = sprintf(" (%s)", label)
 767                             printf("%.2f°C%s\n", $1 / 1000, label)
 768                     }' \
 769                     "$temp_input"
 770             done \
 771             | sort \
 772             | indent "$indent_unit"
 773     done \
 774     | indent "${indent_unit}${indent_unit}"
 775
 776     echo 'net'
 777     #local -r internet_addr=$(internet_addr 0.5)
 778     #local -r internet_ptr=$(host -W 1 "$internet_addr" | awk 'NR == 1 {print $NF}' )
 779
 780     #echo "${indent_unit}internet"
 781     #echo "${indent_unit}${indent_unit}$internet_addr  $internet_ptr"
 782     echo "${indent_unit}if"
 783     (ifconfig; iwconfig) 2> /dev/null \
 784     | awk '
 785         /^[^ ]/ {
 786             device = $1
 787             sub(":$", "", device)
 788             if ($4 ~ "ESSID:") {
 789                 _essid = $4
 790                 sub("^ESSID:\"", "", _essid)
 791                 sub("\"$", "", _essid)
 792                 essid[device] = _essid
 793             }
 794             next
 795         }
 796
 797         /^ / && $1 == "inet" {
 798             address[device] = $2
 799             next
 800         }
 801
 802         /^ +Link Quality=[0-9]+\/[0-9]+ +Signal level=/ {
 803             split($2, lq_parts_eq, "=")
 804             split(lq_parts_eq[2], lq_parts_slash, "/")
 805             cur = lq_parts_slash[1]
 806             max = lq_parts_slash[2]
 807             link[device] = cur / max * 100
 808             next
 809         }
 810
 811         END {
 812             for (device in address)
 813                 if (device != "lo") {
 814                     l = link[device]
 815                     e = essid[device]
 816                     l = l ? sprintf("%.0f%%", l) : "--"
 817                     e = e ? e : "--"
 818                     print device, address[device], e, l
 819                 }
 820         }
 821         ' \
 822     | column -t \
 823     | indent "${indent_unit}${indent_unit}"
 824
 825     # WARN: ensure: $USER ALL=(ALL) NOPASSWD:/bin/netstat
 826
 827     echo "${indent_unit}-->"
 828
 829     sudo -n netstat -tulnp \
 830     | awk -v indent="${indent_unit}${indent_unit}" '
 831         NR > 2 && ((/^tcp/ && proc = $7) || (/^udp/ && proc = $6)) {
 832             protocol = $1
 833             addr = $4
 834             port = a[split(addr, a, ":")]
 835             name = p[split(proc, p, "/")]
 836             names[name] = 1
 837             protocols[protocol] = 1
 838             if (!seen[protocol, name, port]++)
 839                 ports[protocol, name, ++seen[protocol, name]] = port
 840         }
 841
 842         END {
 843             for (protocol in protocols) {
 844                 printf "%s%s\t", indent, toupper(protocol)
 845                 for (name in names) {
 846                     if (n = seen[protocol, name]) {
 847                         sep = ""
 848                         printf "%s:", name
 849                         for (i = 1; i <= n; i++) {
 850                             printf "%s%d", sep, ports[protocol, name, i]
 851                             sep = ","
 852                         }
 853                         printf "  "
 854                     }
 855                 }
 856                 printf "\n"
 857             }
 858         }'
 859
 860     echo "${indent_unit}<->"
 861
 862     printf '%sTCP\t' "${indent_unit}${indent_unit}"
 863     sudo -n netstat -tnp \
 864     | awk 'NR > 2 && $6 == "ESTABLISHED" {print $7}' \
 865     | awk '{sub("^[0-9]+/", ""); print}' \
 866     | sort -u \
 867     | xargs \
 868     | column -t
 869
 870     # TODO: iptables summary
 871 }
 872
 873 ssh_invalid_by_addr() {
 874     awk '
 875         /: Invalid user/ && $5 ~ /^sshd/ {
 876             addr=$10 == "port" ? $9 : $10
 877             max++
 878             by_addr[addr]++
 879         }
 880
 881         END {
 882             for (addr in by_addr)
 883                 if ((c = by_addr[addr]) > 1)
 884                     printf "%d %d %s\n", c, max, addr
 885         }
 886         ' \
 887         /var/log/auth.log \
 888         /var/log/auth.log.1 \
 889     | sort -n -k 1 \
 890     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 891     | column -t
 892 }
 893
 894 ssh_invalid_by_day() {
 895     awk '
 896         BEGIN {
 897             m["Jan"] = "01"
 898             m["Feb"] = "02"
 899             m["Mar"] = "03"
 900             m["Apr"] = "04"
 901             m["May"] = "05"
 902             m["Jun"] = "06"
 903             m["Jul"] = "07"
 904             m["Aug"] = "08"
 905             m["Sep"] = "09"
 906             m["Oct"] = "10"
 907             m["Nov"] = "11"
 908             m["Dec"] = "12"
 909         }
 910
 911         /: Invalid user/ && $5 ~ /^sshd/ {
 912             day = m[$1] "-" $2
 913             max++
 914             by_day[day]++
 915         }
 916
 917         END {
 918             for (day in by_day)
 919                 if ((c = by_day[day]) > 1)
 920                     printf "%d %d %s\n", c, max, day
 921         }
 922         ' \
 923         /var/log/auth.log \
 924         /var/log/auth.log.1 \
 925     | sort -k 3 \
 926     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 927     | column -t
 928 }
 929
 930 ssh_invalid_by_user() {
 931     awk '
 932         /: Invalid user/ && $5 ~ /^sshd/ {
 933             user=$8
 934             max++
 935             by_user[user]++
 936         }
 937
 938         END {
 939             for (user in by_user)
 940                 if ((c = by_user[user]) > 1)
 941                     printf "%d %d %s\n", c, max, user
 942         }
 943         ' \
 944         /var/log/auth.log \
 945         /var/log/auth.log.1 \
 946     | sort -n -k 1 \
 947     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 948     | column -t
 949 }
 950
 951 loggers() {
 952     awk '
 953         {
 954             split($5, prog, "[")
 955             sub(":$", "", prog[1]) # if there were no [], than : will is left behind
 956             print prog[1]
 957         }' /var/log/syslog /var/log/syslog.1 \
 958     | awk '
 959         {
 960             n = split($1, path, "/")  # prog may be in path form
 961             prog = path[n]
 962             total++
 963             count[prog]++
 964         }
 965
 966         END {
 967             for (prog in count)
 968                 print count[prog], total, prog
 969         }' \
 970     | sort -n -k 1 \
 971     | bar_gauge -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 972     | column -t
 973 }