sj

   1 #!/usr/bin/env bash
   2
   3 #=======================================================================
   4 # sj
   5 # File ID: 29dba898-4962-11df-adc3-d5e071bed206
   6 #
   7 # Shortcut to check various stuff.
   8 #
   9 # Author: Øyvind A. Holm <sunny@sunbase.org>
  10 # License: GNU General Public License version 2 or later.
  11 #=======================================================================
  12
  13 progname=sj
  14 VERSION=0.9.1
  15
  16 ARGS="$(getopt -o "\
  17 h\
  18 q\
  19 v\
  20 " -l "\
  21 help,\
  22 maxtemp:,\
  23 quiet,\
  24 space:,\
  25 verbose,\
  26 version,\
  27 " -n "$progname" -- "$@")"
  28 test "$?" = "0" || exit 1
  29 eval set -- "$ARGS"
  30
  31 std_maxtemp=94
  32
  33 opt_help=0
  34 opt_maxtemp=$std_maxtemp
  35 opt_quiet=0
  36 opt_space='0'
  37 opt_verbose=0
  38 while :; do
  39     case "$1" in
  40         -h|--help) opt_help=1; shift ;;
  41         --maxtemp) opt_maxtemp=$2; shift 2 ;;
  42         -q|--quiet) opt_quiet=$(($opt_quiet + 1)); shift ;;
  43         --space) opt_space=$2; shift 2 ;;
  44         -v|--verbose) opt_verbose=$(($opt_verbose + 1)); shift ;;
  45         --version) echo $progname $VERSION; exit 0 ;;
  46         --) shift; break ;;
  47         *) echo $progname: Internal error >&2; exit 1 ;;
  48     esac
  49 done
  50 opt_verbose=$(($opt_verbose - $opt_quiet))
  51
  52 if test "$opt_help" = "1"; then
  53     test $opt_verbose -gt 0 && { echo; echo $progname $VERSION; }
  54     cat <<END
  55
  56 Usage: $progname [options] [command]
  57
  58 Options:
  59
  60   -h, --help
  61     Show this help.
  62   --maxtemp NUM
  63     Define maximum acceptable temperature for "$progname temp-warn".
  64     Default value: $std_maxtemp
  65   -q, --quiet
  66     Be more quiet. Can be repeated to increase silence.
  67   --space BYTES
  68     When used with "dfull":
  69       Estimate time until the free disk space reaches BYTES. This value
  70       is parsed by numfmt(1) from GNU coreutils, check the man page for
  71       allowed values. Examples: 10M = 10000000, 10Mi = 10485760.
  72   -v, --verbose
  73     Increase level of verbosity. Can be repeated.
  74   --version
  75     Print version information.
  76
  77   allspace
  78     Display free space of all local disks every 2nd second until
  79     interrupted.
  80   date
  81     Run a query against pool.ntp.org to see how accurate the system
  82     clock is.
  83   dfull
  84     Display estimated time until the current disk is full based on the
  85     disk usage since the script was started.
  86   df
  87     Display free space of all local disks, sorted by free space.
  88   kern
  89     Follow the kernel log and display new entries immediately when they
  90     occur.
  91   ping
  92     Check that the network is up by issuing a ping command until
  93     interrupted.
  94   space
  95     Display free space of the current disk every second until
  96     interrupted.
  97   temp
  98     Display current temperature.
  99   temp-warn, tw
 100     Loop and check CPU temperature. If it gets too high, create an
 101     xmessage(1) window and send a warning to stderr.
 102
 103 END
 104     exit 0
 105 fi
 106
 107 space_val="$(numfmt --from=auto --round=nearest -- $opt_space)"
 108 test -z "$space_val" && {
 109     echo "$progname: Invalid value in --space argument" >&2
 110     exit 1
 111 }
 112 test $opt_verbose -ge 1 &&
 113     echo "$progname: Using --space $space_val" >&2
 114
 115 free_space() {
 116     df -B1 "$1" -P | tail -1 | tr -s ' ' | cut -f 4 -d ' ' \
 117     | hum | rmspcall | tr -d '\n'
 118 }
 119
 120 free_space_bytes() {
 121     df -B 1 "$1" -P | tail -1 | tr -s ' ' | cut -f 4 -d ' ' | tr -d '\n'
 122 }
 123
 124 all_free_space() {
 125     mount | grep ^/dev/ | cut -f 3 -d ' ' | sort | while read f; do
 126         [ "$f" = "/boot" -o "$f" = "/boot/efi" ] && continue
 127         echo -n " ║ "
 128         if test "$f" = "/"; then
 129             echo -n "/ ";
 130             free_space /
 131         else
 132             echo "$f " | rev | cut -f 1 -d / | rev | tr -d '\n'
 133             free_space "$f"
 134         fi
 135     done
 136     echo
 137 }
 138
 139 [ -z "$1" ] && { echo $progname: No command specified >&2; exit 1; }
 140 if test "$1" = "allspace"; then
 141     unset prev
 142     while :; do
 143         curr="$(all_free_space)"
 144         if test "$curr" != "$prev"; then
 145             echo
 146             echo -n "$(date +"%d %H:%M:%S")$curr$(tput el)"
 147         fi
 148         prev="$curr"
 149         sleep 1
 150     done
 151 elif test "$1" = "date"; then
 152     ntpdate -q pool.ntp.org
 153 elif test "$1" = "df"; then
 154     df -h --si | grep ^Filesystem
 155     df -h --si --total | grep -e /dev/ -e ^total | sort -h -k4
 156 elif test "$1" = "dfull"; then
 157     origsec=$(date +%s)
 158     origtime="$(date -u +"%Y-%m-%d %H:%M:%S.%N")"
 159     origdf=$(( $(free_space_bytes .) - $space_val ))
 160     prevdf=$origdf
 161     ml_goalint=14
 162     ml_goaltime=9
 163     ml_dfdiff=1
 164     while :; do
 165         currtime="$(date -u +"%Y-%m-%d %H:%M:%S.%N")"
 166         currsec=$(date +%s)
 167         currdf=$(( $(free_space_bytes .) - $space_val ))
 168         goal_output="$(
 169             goal "$origtime" "$origdf" 0 "$currdf" 2>/dev/null
 170         )"
 171         dfdiff="$(( $currdf-$origdf ))"
 172         goalint=$(echo $goal_output | awk '{print $1}' | sed 's/\..*//')
 173         goaldate=$(echo $goal_output | awk '{print $2}')
 174         goaltime=$(echo $goal_output | awk '{print $3}' | sed 's/\..*//')
 175         cl_goalint=$(echo $goalint | wc -L)
 176         cl_goaltime=$(echo $goaltime | wc -L)
 177         cl_dfdiff=$(echo $dfdiff | hum | wc -L)
 178         seconds=$(echo $currsec-$origsec | bc)
 179
 180         test $cl_goalint -gt $ml_goalint && ml_goalint=$cl_goalint
 181         test $cl_goaltime -gt $ml_goaltime && ml_goaltime=$cl_goaltime
 182         test $cl_dfdiff -gt $ml_dfdiff && ml_dfdiff=$cl_dfdiff
 183
 184         if test "$(echo "$currdf < $prevdf" | bc)" = "1"; then
 185             t_diskfree="$(tput bold; tput setaf 1)"
 186             t_diskfree_reset="$(tput sgr0)"
 187         elif test "$(echo "$currdf > $prevdf" | bc)" = "1"; then
 188             t_diskfree="$(tput bold; tput setaf 2)"
 189             t_diskfree_reset="$(tput sgr0)"
 190         else
 191             t_diskfree=""
 192             t_diskfree_reset=""
 193         fi
 194
 195         if test -n "$goal_output"; then
 196             printf \
 197 "\\n"\
 198 "%-${ml_goalint}s "\
 199 "%s "\
 200 "%-${ml_goaltime}s "\
 201 "diff: %s%-${ml_dfdiff}s%s  "\
 202 "free: %s%s%s"\
 203 "%s "\
 204 "%s"\
 205                 "$goalint" \
 206                 "$goaldate" \
 207                 "$goaltime" \
 208                 "$t_diskfree" \
 209                 "$(echo $dfdiff | hum)" \
 210                 "$t_diskfree_reset" \
 211                 "$t_diskfree" \
 212                 "$(echo $currdf | hum)" \
 213                 "$t_diskfree_reset" \
 214                 "$(tput el)" \
 215                 "$(
 216                     if test $seconds -gt 0; then
 217                         printf " %s B/s" $(
 218                             printf 'scale=0; %d/%u\n' $dfdiff $seconds |
 219                                 bc | hum
 220                         )
 221                     fi
 222                 )"
 223         else
 224             printf "\\n$progname dfull: No changes yet, %s%s%s bytes free%s" \
 225                 "$t_diskfree" \
 226                 "$(echo $currdf | hum)" \
 227                 "$t_diskfree_reset" \
 228                 "$(tput el)"
 229         fi
 230         prevdf=$currdf
 231         sleep 2
 232     done
 233 elif test "$1" = "kern"; then
 234     tail -Fq /var/log/kern.log /var/log/syslog /var/log/auth.log \
 235     | grep -v " $(hostname) CRON"
 236 elif test "$1" = "space"; then
 237     unset prevlast
 238     while :; do
 239         lastspace=$(free_space .)
 240         if test "$lastspace" != "$prevlast"; then
 241             echo -n " $lastspace $(tput el)"
 242             prevlast=$lastspace
 243         fi
 244         sleep 1
 245     done
 246 elif test "$1" = "temp"; then
 247     temperature_file=/sys/devices/virtual/thermal/thermal_zone0/temp
 248     if test ! -e "$temperature_file"; then
 249         echo $progname: $temperature_file: File not found >&2
 250         echo $progname: Cannot read temperature >&2
 251         exit 1
 252     fi
 253     (
 254         echo scale=1
 255         echo -n $(cat "$temperature_file")
 256         echo / 1000
 257     ) | bc -l
 258 elif test "$1" = "temp-warn" -o "$1" = "tw"; then
 259     unset prevtemp
 260     dispfile="/tmp/sj_tw.$(date +%s).$$.tmp"
 261     if test -e "$dispfile"; then
 262         echo $progname: $dispfile: Tempfile already exists, that\'s spooky >&2
 263         exit 1
 264     fi
 265     while :; do
 266         currtemp="$($progname temp)"
 267         if test -z "$currtemp"; then
 268             echo -n "$progname: Unable to read temperature, " >&2
 269             echo \"$progname temp\" returned nothing >&2
 270             exit 1
 271         fi
 272         if test "$currtemp" != "$prevtemp"; then
 273             echo $(date -u +"%Y-%m-%dT%H:%M:%SZ") $currtemp >>~/log/temp.log
 274             echo -n " $currtemp $(tput el)"
 275             prevtemp=$currtemp
 276         fi
 277         if test $(echo "$currtemp > $opt_maxtemp" | bc) = "1"; then
 278             grep Blimey "$dispfile" 2>/dev/null | grep -q . && rm "$dispfile"
 279             if test ! -e $dispfile; then
 280                 warning="Oi! The temperature is $currtemp!"
 281                 xmessage -button Blimey -print "$warning" >"$dispfile" &
 282                 (
 283                     echo
 284                     tput setab 1
 285                     tput bold
 286                     tput setaf 3
 287                     echo -n "$progname: $warning"
 288                     tput sgr0
 289                     echo -n " "
 290                     tput el
 291                 ) >&2
 292             fi
 293         fi
 294         sleep 2
 295     done
 296 elif test "$1" = "ping"; then
 297     test -d /n900/. && sudo=sudo || unset sudo
 298     while :; do
 299         $sudo ping 178.79.142.16
 300         sleep 1
 301         echo ============================================
 302     done
 303 else
 304     echo $progname: $1: Unknown command >&2
 305     exit 1
 306 fi