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     | cut -c 1-115
 154 }
 155
 156 # Top Disk-Using Files
 157 tduf() {
 158     find "$1" -type f -printf '%s\t%p\0' \
 159     | sort -z -n -k 1 \
 160     | tail -z -n 50 \
 161     | gawk -v RS='\0' '
 162         {
 163             size = $1
 164             path = $0
 165             sub("^" $1 "\t+", "", path)
 166             gb = size / 1024 / 1024 / 1024
 167             printf("%f\t%s\n", gb, path)
 168         }'
 169 }
 170
 171 # Most-recently modified file system objects
 172 recent() {
 173     # NOTES:
 174     # - intentionally not quoting the parameters, so that some can be ignored
 175     #   if not passed, rather than be passed to find as an empty string;
 176     # - %T+ is a GNU extension;
 177     # - gawk is able to split records on \0, while awk cannot.
 178     find $@ -printf '%T@ %T+ %p\0' \
 179     | tee >(gawk -v RS='\0' 'END { printf("[INFO] Total found: %d\n", NR); }') \
 180     | sort -z -k 1 -n -r \
 181     | head -n "$(stty size | awk 'NR == 1 {print $1 - 5}')" -z \
 182     | gawk -v RS='\0' '
 183         {
 184             sub("^" $1 " +", "")  # Remove epoch time
 185             sub("+", " ")         # Blank-out the default separator
 186             sub("\\.[0-9]+", "")  # Remove fractional seconds
 187             print
 188         }'
 189 }
 190
 191 recent_dirs() {
 192     recent "$1" -type d
 193 }
 194
 195 recent_files() {
 196     recent "$1" -type f
 197 }
 198
 199 pa_def_sink() {
 200     pactl info | awk '/^Default Sink:/ {print $3}'
 201 }
 202
 203 void_pkgs() {
 204     curl "https://xq-api.voidlinux.org/v1/query/x86_64?q=$1" | jq '.data'
 205 }
 206
 207 # Colorful man
 208 man() {
 209     # mb: begin blink
 210     # md: begin bold
 211     # me: end   bold, blink and underline
 212     #
 213     # so: begin standout (reverse video)
 214     # se: end   standout
 215     #
 216     # us: begin underline
 217     # ue: end   underline
 218
 219     LESS_TERMCAP_md=$'\e[01;30m' \
 220     LESS_TERMCAP_me=$'\e[0m' \
 221     LESS_TERMCAP_so=$'\e[01;44;33m' \
 222     LESS_TERMCAP_se=$'\e[0m' \
 223     LESS_TERMCAP_us=$'\e[01;33m' \
 224     LESS_TERMCAP_ue=$'\e[0m' \
 225     command man "$@"
 226 }
 227
 228 experiment() {
 229     cd "$(~/bin/experiment $@)" || kill -INT $$
 230 }
 231
 232 hump() {
 233     ledit -l "$(stty size | awk '{print $2}')" ocaml $@
 234 }
 235
 236 howto() {
 237     cat "$(find  ~/Archives/Documents/HOWTOs -mindepth 1 -maxdepth 1 | sort | fzf)"
 238 }
 239
 240 _yt() {
 241     local -r base_dir="$1"
 242     local -r opts="$2"
 243     local -r uri="$3"
 244
 245     local -r id=$(youtube-dlc --get-id "$uri")
 246     local -r title=$(youtube-dlc --get-title "$uri" | sed 's/[^A-Za-z0-9._-]/_/g')
 247     local -r dir="${base_dir}/${title}--${id}"
 248
 249     mkdir -p "$dir"
 250     cd "$dir" || kill -INT $$
 251     echo "$uri" > 'uri'
 252     youtube-dlc $opts -c --write-description --write-info-json "$uri"
 253 }
 254
 255 yt_audio() {
 256     local -r uri="$1"
 257     _yt "${DIR_YOUTUBE_AUDIO}/individual" '-f 140' "$uri"
 258 }
 259
 260 yt_video() {
 261     local -r uri="$1"
 262     _yt "${DIR_YOUTUBE_VIDEO}/individual" "$uri"
 263 }
 264
 265 gh_fetch_repos() {
 266     curl "https://api.github.com/$1/$2/repos?page=1&per_page=10000"
 267 }
 268
 269 gh_clone() {
 270     local -r gh_user_type="$1"
 271     local -r gh_user_name="$2"
 272
 273     local -r gh_dir="${DIR_GITHUB}/${gh_user_name}"
 274     mkdir -p "$gh_dir"
 275     cd "$gh_dir" || kill -INT $$
 276     gh_fetch_repos "$gh_user_type" "$gh_user_name" \
 277     | jq --raw-output '.[] | select(.fork | not) | .git_url' \
 278     | parallel -j 25 \
 279     git clone {}
 280 }
 281
 282 gh_clone_user() {
 283     gh_clone 'users' "$1"
 284 }
 285
 286 gh_clone_org() {
 287     gh_clone 'orgs' "$1"
 288 }
 289
 290 gh_clone_repo() {
 291     gh_username=$(echo "$1" | awk -F / '"$1 == "https" && $3 == github.com" {print $4}')
 292     gh_dir="${DIR_GITHUB}/${gh_username}"
 293     mkdir -p "$gh_dir"
 294     cd "$gh_dir" || kill -INT $$
 295     git clone "$1"
 296 }
 297
 298 work_log_template() {
 299 cat << EOF
 300 $(date '+%F %A')
 301 ==========
 302
 303 Morning report
 304 --------------
 305
 306 ### Prev
 307
 308 ### Curr
 309
 310 ### Next
 311
 312 ### Blockers
 313
 314 Day's notes
 315 -----------
 316 EOF
 317 }
 318
 319 work_log() {
 320     mkdir -p "$DIR_WORK_LOG"
 321     local -r file_work_log_today="${DIR_WORK_LOG}/$(date +%F).md"
 322     if [ ! -f "$file_work_log_today" ]
 323     then
 324         work_log_template > "$file_work_log_today"
 325     fi
 326     vim -c 'set spell' "$file_work_log_today"
 327
 328 }
 329
 330 note() {
 331     mkdir -p "$DIR_NOTES"
 332     vim -c 'set spell' "$DIR_NOTES/$(date +'%Y_%m_%d--%H_%M_%S%z')--$1.md"
 333 }
 334
 335 weather() {
 336     local _weather_location
 337     case "$1" in
 338         '') _weather_location="$WEATHER_LOCATION";;
 339          *) _weather_location="$1"
 340     esac
 341     curl "http://wttr.in/$_weather_location?format=v2"
 342 }
 343
 344 _bt_devs_infos() {
 345     # grep's defintion of a line does not include \r, wile awk's does and
 346     # which bluetoothctl outputs
 347     awk '/^Device +/ {print $2}' \
 348     | xargs -I% sh -c 'echo info % | bluetoothctl' \
 349     | awk '/^Device |^\t[A-Z][A-Za-z0-9]+: /'
 350 }
 351
 352 bt_devs_paired() {
 353     echo 'paired-devices' | bluetoothctl | _bt_devs_infos
 354 }
 355
 356 bt_devs() {
 357     echo 'devices' | bluetoothctl | _bt_devs_infos
 358 }
 359
 360 run() {
 361     local -r stderr="$(mktemp)"
 362
 363     local code urgency
 364
 365     $@ 2> >(tee "$stderr")
 366     code="$?"
 367     case "$code" in
 368         0) urgency='normal';;
 369         *) urgency='critical'
 370     esac
 371     notify-send -u "$urgency" "Job done: $code" "$(cat $stderr)"
 372     rm "$stderr"
 373 }
 374
 375 bar_gauge() {
 376     awk "$@" '
 377         BEGIN {
 378             # CLI options
 379             width    = width    ? width    : 80
 380             ch_left  = ch_left  ? ch_left  : "["
 381             ch_right = ch_right ? ch_right : "]"
 382             ch_blank = ch_blank ? ch_blank : "-"
 383             ch_used  = ch_used  ? ch_used  : "|"
 384             num      = num      ? 1        : 0
 385             pct      = pct      ? 1        : 0
 386         }
 387
 388         {
 389             cur = $1
 390             max = $2
 391             lab = $3
 392
 393             cur_scaled = num_scale(cur, max, 1, width)
 394
 395             printf \
 396                 "%s%s%s%s", \
 397                 lab ? lab         " " : "", \
 398                 num ? cur "/" max " " : "", \
 399                 pct ? sprintf("%3.0f%% ", cur / max * 100) : "", \
 400                 ch_left
 401             for (i=1; i<=width; i++) {
 402                 c = i <= cur_scaled ? ch_used : ch_blank
 403                 printf "%s", c
 404             }
 405             printf "%s\n", ch_right
 406         }
 407
 408         function num_scale(src_cur, src_max, dst_min, dst_max) {
 409             return dst_min + ((src_cur * (dst_max - dst_min)) / src_max)
 410         }
 411     '
 412 }
 413
 414 motd_batt() {
 415     case "$(uname)" in
 416         'Linux')
 417             upower --dump \
 418             | awk '
 419                 /^Device:[ \t]+/ {
 420                     device["path"] = $2
 421                     next
 422                 }
 423
 424                 /  battery/ && device["path"] {
 425                     device["is_battery"] = 1
 426                     next
 427                 }
 428
 429                 /    percentage:/ && device["is_battery"] {
 430                     device["battery_percentage"] = $2
 431                     sub("%$", "", device["battery_percentage"])
 432                     next
 433                 }
 434
 435                 /^$/ {
 436                     if (device["is_battery"] && device["path"] == "/org/freedesktop/UPower/devices/DisplayDevice")
 437                         print device["battery_percentage"], 100, "batt"
 438                     delete device
 439                 }
 440             '
 441         ;;
 442     esac
 443 }
 444
 445 indent() {
 446     awk -v unit="$1" '{printf "%s%s\n", unit, $0}'
 447 }
 448
 449 motd() {
 450     local -r indent_unit='    '
 451
 452     uname -srvmo
 453     hostname | figlet
 454     uptime
 455
 456     echo
 457
 458     printf 'tmux: sessions %d, clients %d\n' \
 459         "$(tmux list-sessions 2> /dev/null | wc -l)" \
 460         "$(tmux list-clients  2> /dev/null | wc -l)"
 461
 462     echo
 463
 464     echo 'Resources'
 465     (
 466         free | awk '$1 == "Mem:" {print $3, $2, "mem"}'
 467         df ~ | awk 'NR == 2 {print $3, $3 + $4, "disk"}'
 468         motd_batt
 469     ) \
 470     | bar_gauge -v width=60 -v pct=1 \
 471     | column -t \
 472     | indent "$indent_unit"
 473
 474     echo
 475
 476     echo 'Network'
 477     echo "${indent_unit}if"
 478     (ifconfig; iwconfig) 2> /dev/null \
 479     | awk '
 480         /^[^ ]/ {
 481             device = $1
 482             sub(":$", "", device)
 483             if ($4 ~ "ESSID:") {
 484                 _essid = $4
 485                 sub("^ESSID:\"", "", _essid)
 486                 sub("\"$", "", _essid)
 487                 essid[device] = _essid
 488             }
 489             next
 490         }
 491
 492         /^ / && $1 == "inet" {
 493             address[device] = $2
 494             next
 495         }
 496
 497         /^ +Link Quality=[0-9]+\/[0-9]+ +Signal level=/ {
 498             split($2, lq_parts_eq, "=")
 499             split(lq_parts_eq[2], lq_parts_slash, "/")
 500             cur = lq_parts_slash[1]
 501             max = lq_parts_slash[2]
 502             link[device] = cur / max * 100
 503             next
 504         }
 505
 506         END {
 507             for (device in address)
 508                 if (device != "lo") {
 509                     l = link[device]
 510                     e = essid[device]
 511                     l = l ? sprintf("%.0f%%", l) : "--"
 512                     e = e ? e : "--"
 513                     print device, address[device], e, l
 514                 }
 515         }
 516         ' \
 517     | column -t \
 518     | indent "${indent_unit}${indent_unit}"
 519
 520     # WARN: ensure: $USER ALL=(ALL) NOPASSWD:/bin/netstat
 521
 522     echo "${indent_unit}-->"
 523
 524     printf '%sUDP: ' "${indent_unit}${indent_unit}"
 525     sudo -n netstat -ulnp \
 526     | awk 'NR > 2 {print $6}' \
 527     | awk -F/ '{print $2}' \
 528     | sort -u \
 529     | xargs \
 530     | column -t
 531
 532     printf '%sTCP: ' "${indent_unit}${indent_unit}"
 533     sudo -n netstat -tlnp \
 534     | awk 'NR > 2 {print $7}' \
 535     | awk -F/ '{print $2}' \
 536     | sort -u \
 537     | xargs \
 538     | column -t
 539
 540     echo "${indent_unit}<->"
 541
 542     printf '%sTCP: ' "${indent_unit}${indent_unit}"
 543     sudo -n netstat -tnp \
 544     | awk 'NR > 2 && $6 == "ESTABLISHED" {print $7}' \
 545     | awk -F/ '{print $2}' \
 546     | sort -u \
 547     | xargs \
 548     | column -t
 549
 550     echo
 551
 552     echo 'Process owners'
 553     ps -eo user \
 554     | awk '
 555         NR > 1 {
 556             count_by_user[$1]++
 557             total++
 558         }
 559
 560         END {
 561             for (user in count_by_user)
 562                 print count_by_user[user], total, user
 563         }
 564         ' \
 565     | sort -n -k 1 -r \
 566     | bar_gauge -v num=1 -v ch_left=' ' -v ch_right=' ' -v ch_blank=' ' \
 567     | column -t \
 568     | indent "${indent_unit}"
 569
 570     echo
 571
 572     echo 'Loggers'
 573     awk '
 574         {
 575             split($5, prog, "[")
 576             sub(":$", "", prog[1]) # if there were no [], than : will is left behind
 577             print prog[1]
 578         }' /var/log/syslog \
 579     | awk '
 580         {
 581             n = split($1, path, "/")  # prog may be in path form
 582             prog = path[n]
 583             total++
 584             count[prog]++
 585         }
 586
 587         END {
 588             for (prog in count)
 589                 print count[prog], total, prog
 590         }' \
 591     | sort -n -k 1 -r \
 592     | bar_gauge -v width=30 -v num=1 -v ch_left=' ' -v ch_right=' ' -v ch_blank=' ' \
 593     | column -t \
 594     | indent "${indent_unit}"
 595 }
 596
 597 ssh_invalid_attempts_from() {
 598     awk '
 599         /: Invalid user/ && $5 ~ /^sshd/ {
 600             u=$8
 601             addr=$10 == "port" ? $9 : $10
 602             max++
 603             curr[addr]++
 604         }
 605
 606         END {
 607             for (addr in curr)
 608                 if ((c = curr[addr]) > 1)
 609                     print c, max, addr
 610         }
 611         ' \
 612         /var/log/auth.log \
 613         /var/log/auth.log.1 \
 614     | sort -n -k 1 \
 615     | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
 616     | column -t
 617 }