home/lib/login_functions.sh

   1 #
   2
   3 d() {
   4     local -r word=$(fzf < /usr/share/dict/words)
   5     dict "$word"
   6 }
   7
   8 shell_activity_report() {
   9     # TODO: optional concrete number output
  10     # TODO: optional combinations of granularities: hour, weekday, month, year
  11     local group_by="$1"
  12     case "$group_by" in
  13         'mon') ;;
  14         'dow') ;;
  15         '') group_by='dow';;
  16         *)
  17             echo "Usage: $0 [mon|dow]" >&2
  18             kill -INT $$
  19     esac
  20     history \
  21     | awk -v group_by="$group_by" '
  22         function date2dow(y, m, d,    _t, _i) {
  23             # Contract:
  24             #   y > 1752,  1 <= m <= 12.
  25             # Source:
  26             #   Sakamoto`s methods
  27             #   https://en.wikipedia.org/wiki/Determination_of_the_day_of_the_week#Sakamoto%27s_methods
  28             _t[ 0] = 0
  29             _t[ 1] = 3
  30             _t[ 2] = 2
  31             _t[ 3] = 5
  32             _t[ 4] = 0
  33             _t[ 5] = 3
  34             _t[ 6] = 5
  35             _t[ 7] = 1
  36             _t[ 8] = 4
  37             _t[ 9] = 6
  38             _t[10] = 2
  39             _t[11] = 4
  40             y -= m < 3
  41             _i = int(y + y/4 - y/100 + y/400 + _t[m - 1] + d) % 7
  42             _i = _i == 0 ? 7 : _i  # Make Sunday last
  43             return _i
  44
  45         }
  46
  47         {
  48             # NOTE: $2 & $3 are specific to oh-my-zsh history output
  49             date = $2
  50             time = $3
  51             d_fields = split(date, d, "-")
  52             t_fields = split(time, t, ":")
  53             if (t_fields && d_fields) {
  54                 # +0 to coerce number from string
  55                 year  = d[1] + 0
  56                 month = d[2] + 0
  57                 day   = d[3] + 0
  58                 hour = t[1] + 0
  59                 dow = date2dow(year, month, day)
  60                 g = group_by == "mon" ? month : dow  # dow is default
  61                 c = count[g, hour]++
  62             }
  63             if (c > max)
  64                 max = c
  65         }
  66
  67         END {
  68             w[1] = "Monday"
  69             w[2] = "Tuesday"
  70             w[3] = "Wednesday"
  71             w[4] = "Thursday"
  72             w[5] = "Friday"
  73             w[6] = "Saturday"
  74             w[7] = "Sunday"
  75
  76             m[ 1] = "January"
  77             m[ 2] = "February"
  78             m[ 3] = "March"
  79             m[ 4] = "April"
  80             m[ 5] = "May"
  81             m[ 6] = "June"
  82             m[ 7] = "July"
  83             m[ 8] = "August"
  84             m[ 9] = "September"
  85             m[10] = "October"
  86             m[11] = "November"
  87             m[12] = "December"
  88
  89             n = group_by == "mon" ? 12 : 7  # dow is default
  90
  91             for (gid = 1; gid <= n; gid++) {
  92                 group = group_by == "mon" ? m[gid] : w[gid]
  93                 printf "%s\n", group;
  94                 for (hour=0; hour<24; hour++) {
  95                     c = count[gid, hour]
  96                     printf "  %2d ", hour
  97                     for (i = 1; i <= (c * 100) / max; i++)
  98                         printf "|"
  99                     printf "\n"
 100                 }
 101             }
 102         }'
 103 }
 104
 105 top_commands() {
 106     history \
 107     | awk '
 108         {
 109             count[$4]++
 110         }
 111
 112         END {
 113             for (cmd in count)
 114                 print count[cmd], cmd
 115         }' \
 116     | sort -n -r -k 1 \
 117     | head -50 \
 118     | awk '
 119         {
 120             cmd[NR] = $2
 121             c = count[NR] = $1 + 0  # + 0 to coerce number from string
 122             if (c > max)
 123                 max = c
 124         }
 125
 126         END {
 127             for (i = 1; i <= NR; i++) {
 128                 c = count[i]
 129                 printf "%s %d ", cmd[i], c
 130                 scaled = (c * 100) / max
 131                 for (j = 1; j <= scaled; j++)
 132                     printf "|"
 133                 printf "\n"
 134             }
 135         }' \
 136     | column -t
 137 }
 138
 139 # Top Disk-Using directories
 140 # TODO: Consider using numfmt instead of awk
 141 tdu() {
 142     du "$1" \
 143     | sort -n -k 1 \
 144     | tail -50 \
 145     | awk '
 146         {
 147             size = $1
 148             path = $0
 149             sub("^" $1 "\t+", "", path)
 150             gb = size / 1024 / 1024
 151             printf("%f\t%s\n", gb, path)
 152         }'
 153 }
 154
 155 # Top Disk-Using Files
 156 tduf() {
 157     find "$1" -type f -printf '%s\t%p\0' \
 158     | sort -z -n -k 1 \
 159     | tail -z -n 50 \
 160     | gawk -v RS='\0' '
 161         {
 162             size = $1
 163             path = $0
 164             sub("^" $1 "\t+", "", path)
 165             gb = size / 1024 / 1024 / 1024
 166             printf("%f\t%s\n", gb, path)
 167         }'
 168 }
 169
 170 # Most-recently modified file system objects
 171 recent() {
 172     # NOTES:
 173     # - intentionally not quoting the parameters, so that some can be ignored
 174     #   if not passed, rather than be passed to find as an empty string;
 175     # - %T+ is a GNU extension;
 176     # - gawk is able to split records on \0, while awk cannot.
 177     find $@ -printf '%T@ %T+ %p\0' \
 178     | tee >(gawk -v RS='\0' 'END { printf("[INFO] Total found: %d\n", NR); }') \
 179     | sort -z -k 1 -n -r \
 180     | head -n "$(stty size | awk 'NR == 1 {print $1 - 5}')" -z \
 181     | gawk -v RS='\0' '
 182         {
 183             sub("^" $1 " +", "")  # Remove epoch time
 184             sub("+", " ")         # Blank-out the default separator
 185             sub("\\.[0-9]+", "")  # Remove fractional seconds
 186             print
 187         }'
 188 }
 189
 190 recent_dirs() {
 191     recent "$1" -type d
 192 }
 193
 194 recent_files() {
 195     recent "$1" -type f
 196 }
 197
 198 pa_def_sink() {
 199     pactl info | awk '/^Default Sink:/ {print $3}'
 200 }
 201
 202 void_pkgs() {
 203     curl "https://xq-api.voidlinux.org/v1/query/x86_64?q=$1" | jq '.data'
 204 }
 205
 206 # Colorful man
 207 man() {
 208     # mb: begin blink
 209     # md: begin bold
 210     # me: end   bold, blink and underline
 211     #
 212     # so: begin standout (reverse video)
 213     # se: end   standout
 214     #
 215     # us: begin underline
 216     # ue: end   underline
 217
 218     LESS_TERMCAP_md=$'\e[01;30m' \
 219     LESS_TERMCAP_me=$'\e[0m' \
 220     LESS_TERMCAP_so=$'\e[01;44;33m' \
 221     LESS_TERMCAP_se=$'\e[0m' \
 222     LESS_TERMCAP_us=$'\e[01;33m' \
 223     LESS_TERMCAP_ue=$'\e[0m' \
 224     command man "$@"
 225 }
 226
 227 experiment() {
 228     cd "$(~/bin/experiment $@)" || kill -INT $$
 229 }
 230
 231 hump() {
 232     ledit -l "$(stty size | awk '{print $2}')" ocaml $@
 233 }
 234
 235 howto() {
 236     cat "$(find  ~/arc/doc/HOWTOs -mindepth 1 -maxdepth 1 | sort | fzf)"
 237 }
 238
 239 _yt() {
 240     local -r base_dir="$1"
 241     local -r uri="$2"
 242     local -r opts="$3"
 243
 244     local -r id=$(youtube-dlc --get-id "$uri")
 245     local -r title=$(youtube-dlc --get-title "$uri" | sed 's/[^A-Za-z0-9._-]/_/g')
 246     local -r dir="${base_dir}/${title}--${id}"
 247
 248     mkdir -p "$dir"
 249     cd "$dir" || kill -INT $$
 250     echo "$uri" > 'uri'
 251     youtube-dlc $opts -c --write-description --write-info-json "$uri"
 252 }
 253
 254 yt_audio() {
 255     local -r uri="$1"
 256     _yt "${DIR_YOUTUBE_AUDIO}/individual" "$uri" '-f 140'
 257 }
 258
 259 yt_video() {
 260     local -r uri="$1"
 261     _yt "${DIR_YOUTUBE_VIDEO}/individual" "$uri"
 262 }
 263
 264 gh_fetch_repos() {
 265     curl "https://api.github.com/$1/$2/repos?page=1&per_page=10000"
 266 }
 267
 268 gh_clone() {
 269     local -r gh_user_type="$1"
 270     local -r gh_user_name="$2"
 271
 272     local -r gh_dir="${DIR_GITHUB}/${gh_user_name}"
 273     mkdir -p "$gh_dir"
 274     cd "$gh_dir" || kill -INT $$
 275     gh_fetch_repos "$gh_user_type" "$gh_user_name" \
 276     | jq --raw-output '.[] | select(.fork | not) | .git_url' \
 277     | parallel -j 25 \
 278     git clone {}
 279 }
 280
 281 gh_clone_user() {
 282     gh_clone 'users' "$1"
 283 }
 284
 285 gh_clone_org() {
 286     gh_clone 'orgs' "$1"
 287 }
 288
 289 gh_clone_repo() {
 290     gh_username=$(echo "$1" | awk -F / '"$1 == "https" && $3 == github.com" {print $4}')
 291     gh_dir="${DIR_GITHUB}/${gh_username}"
 292     mkdir -p "$gh_dir"
 293     cd "$gh_dir" || kill -INT $$
 294     git clone "$1"
 295 }
 296
 297 work_log_template() {
 298 cat << EOF
 299 $(date '+%F %A')
 300 ==========
 301
 302 Morning report
 303 --------------
 304
 305 ### Prev
 306
 307 ### Curr
 308
 309 ### Next
 310
 311 ### Blockers
 312
 313 Day's notes
 314 -----------
 315 EOF
 316 }
 317
 318 work_log() {
 319     mkdir -p "$DIR_WORK_LOG"
 320     local -r file_work_log_today="${DIR_WORK_LOG}/$(date +%F).md"
 321     if [ ! -f "$file_work_log_today" ]
 322     then
 323         work_log_template > "$file_work_log_today"
 324     fi
 325     vim -c 'set spell' "$file_work_log_today"
 326
 327 }
 328
 329 note() {
 330     mkdir -p "$DIR_NOTES"
 331     vim -c 'set spell' "$DIR_NOTES/$(date +'%Y_%m_%d--%H_%M_%S%z')--$1.md"
 332 }
 333
 334 weather() {
 335     local _weather_location
 336     case "$1" in
 337         '') _weather_location="$WEATHER_LOCATION";;
 338          *) _weather_location="$1"
 339     esac
 340     curl "http://wttr.in/$_weather_location?format=v2"
 341 }
 342
 343 _bt_devs_infos() {
 344     # grep's defintion of a line does not include \r, wile awk's does and
 345     # which bluetoothctl outputs
 346     awk '/^Device +/ {print $2}' \
 347     | xargs -I% sh -c 'echo info % | bluetoothctl' \
 348     | awk '/^Device |^\t[A-Z][A-Za-z0-9]+: /'
 349 }
 350
 351 bt_devs_paired() {
 352     echo 'paired-devices' | bluetoothctl | _bt_devs_infos
 353 }
 354
 355 bt_devs() {
 356     echo 'devices' | bluetoothctl | _bt_devs_infos
 357 }
 358
 359 run() {
 360     local -r stderr="$(mktemp)"
 361
 362     local code urgency
 363
 364     $@ 2> >(tee "$stderr")
 365     code="$?"
 366     case "$code" in
 367         0) urgency='normal';;
 368         *) urgency='critical'
 369     esac
 370     notify-send -u "$urgency" "Job done: $code" "$(cat $stderr)"
 371     rm "$stderr"
 372 }
 373
 374 bar_gauge() {
 375     awk "$@" '
 376         BEGIN {
 377             # CLI options
 378             width    = width    ? width    : 80
 379             ch_left  = ch_left  ? ch_left  : "["
 380             ch_right = ch_right ? ch_right : "]"
 381             ch_blank = ch_blank ? ch_blank : "-"
 382             ch_used  = ch_used  ? ch_used  : "|"
 383             num      = num      ? 1        : 0
 384             pct      = pct      ? 1        : 0
 385         }
 386
 387         {
 388             cur = $1
 389             max = $2
 390             lab = $3
 391
 392             cur_scaled = num_scale(cur, max, 1, width)
 393
 394             printf \
 395                 "%s%s%s%s", \
 396                 lab ? lab         " " : "", \
 397                 num ? cur "/" max " " : "", \
 398                 pct ? sprintf("%3.0f%% ", cur / max * 100) : "", \
 399                 ch_left
 400             for (i=1; i<=width; i++) {
 401                 c = i <= cur_scaled ? ch_used : ch_blank
 402                 printf "%s", c
 403             }
 404             printf "%s\n", ch_right
 405         }
 406
 407         function num_scale(src_cur, src_max, dst_min, dst_max) {
 408             return dst_min + ((src_cur * (dst_max - dst_min)) / src_max)
 409         }
 410     '
 411 }
 412
 413 flat_top_5() {
 414     sort -n -k 1 -r \
 415     | head -5 \
 416     | awk '
 417         {
 418             cur  = $1
 419             max  = $2
 420             name = $3
 421             pct  = cur / max * 100
 422             printf "%s%s %.2f%%", sep, name, pct
 423             sep = ",  "
 424         }
 425
 426         END {printf "\n"}
 427         '
 428 }
 429
 430 internet_addr() {
 431     curl --silent --show-error --max-time "${1:=1}" 'https://api.ipify.org' 2>&1
 432 }
 433
 434 status_batt() {
 435     case "$(uname)" in
 436         'Linux')
 437             if which upower > /dev/null
 438             then
 439                 upower --dump \
 440                 | awk '
 441                     /^Device:[ \t]+/ {
 442                         device["path"] = $2
 443                         next
 444                     }
 445
 446                     /  battery/ && device["path"] {
 447                         device["is_battery"] = 1
 448                         next
 449                     }
 450
 451                     /    percentage:/ && device["is_battery"] {
 452                         device["battery_percentage"] = $2
 453                         sub("%$", "", device["battery_percentage"])
 454                         next
 455                     }
 456
 457                     /^$/ {
 458                         if (device["is_battery"] && device["path"] == "/org/freedesktop/UPower/devices/DisplayDevice")
 459                             print device["battery_percentage"], 100, "batt"
 460                         delete device
 461                     }
 462                 '
 463             fi
 464         ;;
 465     esac
 466 }
 467
 468 indent() {
 469     awk -v unit="$1" '{printf "%s%s\n", unit, $0}'
 470 }
 471
 472 status() {
 473     local -r indent_unit='    '
 474
 475     uname -srvmo
 476     hostname | figlet
 477     uptime
 478
 479     echo
 480
 481     echo 'accounting'
 482
 483     printf '%stmux\n%ssessions %d, clients %d\n' \
 484         "$indent_unit" \
 485         "${indent_unit}${indent_unit}" \
 486         "$(tmux list-sessions 2> /dev/null | wc -l)" \
 487         "$(tmux list-clients  2> /dev/null | wc -l)"
 488
 489     echo
 490
 491     printf '%sprocs by user\n' "${indent_unit}"
 492     ps -eo user \
 493     | awk '
 494         NR > 1 {
 495             count_by_user[$1]++
 496             total++
 497         }
 498
 499         END {
 500             for (user in count_by_user)
 501                 print count_by_user[user], total, user
 502         }
 503         ' \
 504     | flat_top_5 \
 505     | indent "${indent_unit}${indent_unit}"
 506
 507     echo
 508
 509     echo 'resources'
 510     (
 511         free | awk '$1 == "Mem:" {print $3, $2, "mem"}'
 512         df ~ | awk 'NR == 2 {print $3, $3 + $4, "disk"}'
 513         status_batt
 514     ) \
 515     | bar_gauge -v width=60 -v pct=1 \
 516     | column -t \
 517     | indent "$indent_unit"
 518
 519     echo
 520
 521     printf '%smem by proc\n' "$indent_unit"
 522     ps -eo rss,cmd \
 523     | awk -v total="$(free | awk '$1 == "Mem:" {print $2; exit}')" '
 524         NR > 1 {
 525             rss = $1
 526             cmd = $2
 527             n = split(cmd, path, "/")  # _may_ be a path
 528             proc = path[n]
 529             by_proc[proc] += rss
 530         }
 531
 532         END {
 533             for (proc in by_proc)
 534                 print by_proc[proc], total, proc
 535             }
 536         ' \
 537         | flat_top_5 \
 538         | indent "${indent_unit}${indent_unit}"
 539
 540     echo
 541
 542     printf '%sthermal\n' "$indent_unit"
 543     for _dir in /sys/class/thermal/thermal_zone*
 544     do
 545         printf '%s %.2f C\n' \
 546             $(cat "$_dir"/type) \
 547             $(( $(cat "$_dir"/temp) / 1000 ))
 548     done \
 549     | column -t \
 550     | indent "${indent_unit}${indent_unit}"
 551
 552     echo 'net'
 553     local -r internet_addr=$(internet_addr 0.5)
 554     local -r internet_ptr=$(host -W 1 "$internet_addr" | awk 'NR == 1 {print $NF}' )
 555
 556     echo "${indent_unit}internet"
 557     echo "${indent_unit}${indent_unit}$internet_addr  $internet_ptr"
 558     echo "${indent_unit}if"
 559     (ifconfig; iwconfig) 2> /dev/null \
 560     | awk '
 561         /^[^ ]/ {
 562             device = $1
 563             sub(":$", "", device)
 564             if ($4 ~ "ESSID:") {
 565                 _essid = $4
 566                 sub("^ESSID:\"", "", _essid)
 567                 sub("\"$", "", _essid)
 568                 essid[device] = _essid
 569             }
 570             next
 571         }
 572
 573         /^ / && $1 == "inet" {
 574             address[device] = $2
 575             next
 576         }
 577
 578         /^ +Link Quality=[0-9]+\/[0-9]+ +Signal level=/ {
 579             split($2, lq_parts_eq, "=")
 580             split(lq_parts_eq[2], lq_parts_slash, "/")
 581             cur = lq_parts_slash[1]
 582             max = lq_parts_slash[2]
 583             link[device] = cur / max * 100
 584             next
 585         }
 586
 587         END {
 588             for (device in address)
 589                 if (device != "lo") {
 590                     l = link[device]
 591                     e = essid[device]
 592                     l = l ? sprintf("%.0f%%", l) : "--"
 593                     e = e ? e : "--"
 594                     print device, address[device], e, l
 595                 }
 596         }
 597         ' \
 598     | column -t \
 599     | indent "${indent_unit}${indent_unit}"
 600
 601     # WARN: ensure: $USER ALL=(ALL) NOPASSWD:/bin/netstat
 602
 603     echo "${indent_unit}-->"
 604
 605     sudo -n netstat -tulnp \
 606     | awk -v indent="${indent_unit}${indent_unit}" '
 607         NR > 2 && ((/^tcp/ && proc = $7) || (/^udp/ && proc = $6)) {
 608             protocol = $1
 609             addr = $4
 610             port = a[split(addr, a, ":")]
 611             name = p[split(proc, p, "/")]
 612             names[name] = 1
 613             protocols[protocol] = 1
 614             if (!seen[protocol, name, port]++)
 615                 ports[protocol, name, ++seen[protocol, name]] = port
 616         }
 617
 618         END {
 619             for (protocol in protocols) {
 620                 printf "%s%s\t", indent, toupper(protocol)
 621                 for (name in names) {
 622                     if (n = seen[protocol, name]) {
 623                         sep = ""
 624                         printf "%s:", name
 625                         for (i = 1; i <= n; i++) {
 626                             printf "%s%d", sep, ports[protocol, name, i]
 627                             sep = ","
 628                         }
 629                         printf "  "
 630                     }
 631                 }
 632                 printf "\n"
 633             }
 634         }'
 635
 636     echo "${indent_unit}<->"
 637
 638     printf '%sTCP: ' "${indent_unit}${indent_unit}"
 639     sudo -n netstat -tnp \
 640     | awk 'NR > 2 && $6 == "ESTABLISHED" {print $7}' \
 641     | awk -F/ '{print $2}' \
 642     | sort -u \
 643     | xargs \
 644     | column -t
 645
 646     # TODO: iptables summary
 647 }
 648
 649 ssh_invalid_attempts_from() {
 650     awk '
 651         /: Invalid user/ && $5 ~ /^sshd/ {
 652             u=$8
 653             addr=$10 == "port" ? $9 : $10
 654             max++
 655             curr[addr]++
 656         }
 657
 658         END {
 659             for (addr in curr)
 660                 if ((c = curr[addr]) > 1)
 661                     print c, max, addr
 662         }
 663         ' \
 664         /var/log/auth.log \
 665         /var/log/auth.log.1 \
 666     | sort -n -k 1 \
 667     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 668     | column -t
 669 }
 670
 671 loggers() {
 672     awk '
 673         {
 674             split($5, prog, "[")
 675             sub(":$", "", prog[1]) # if there were no [], than : will is left behind
 676             print prog[1]
 677         }' /var/log/syslog /var/log/syslog.1 \
 678     | awk '
 679         {
 680             n = split($1, path, "/")  # prog may be in path form
 681             prog = path[n]
 682             total++
 683             count[prog]++
 684         }
 685
 686         END {
 687             for (prog in count)
 688                 print count[prog], total, prog
 689         }' \
 690     | sort -n -k 1 \
 691     | bar_gauge -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 692     | column -t
 693 }