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=0.8.6
  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: $std_maxtemp
  65   -q, --quiet
  66     Be more quiet. Can be repeated to increase silence.
  67   --space BYTES
  68     When used with "dfull":
  69       Estimate time until the free disk space reaches BYTES. This value
  70       is parsed by numfmt(1) from GNU coreutils, check the man page for
  71       allowed values. Examples: 10M = 10000000, 10Mi = 10485760.
  72   -v, --verbose
  73     Increase level of verbosity. Can be repeated.
  74   --version
  75     Print version information.
  76
  77 If no command is specified, it checks that the network is up by issuing
  78 a ping command until interrupted. These commands are also available:
  79
  80   allspace
  81     Display free space of all local disks every 2nd second until
  82     interrupted.
  83   date
  84     Run a query against pool.ntp.org to see how accurate the system
  85     clock is.
  86   dfull
  87     Display estimated time until the current disk is full based on the
  88     disk usage since the script was started.
  89   df
  90     Display free space of all local disks, sorted by free space.
  91   kern
  92     Follow the kernel log and display new entries immediately when they
  93     occur.
  94   space
  95     Display free space of the current disk every second until
  96     interrupted.
  97   temp
  98     Display current temperature.
  99   temp-warn, tw
 100     Loop and check CPU temperature. If it gets too high, create an
 101     xmessage(1) window and send a warning to stderr.
 102
 103 END
 104     exit 0
 105 fi
 106
 107 space_val="$(numfmt --from=auto -- $opt_space)"
 108 test -z "$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 -h --si "$1" -P | tail -1 | tr -s ' ' | cut -f 4 -d ' ' | tr -d '\n'
 117 }
 118
 119 free_space_bytes() {
 120     df -B 1 "$1" -P | tail -1 | tr -s ' ' | cut -f 4 -d ' ' | tr -d '\n'
 121 }
 122
 123 all_free_space() {
 124     mount | grep ^/dev/ | cut -f 3 -d ' ' | sort | while read f; do
 125         if test "$f" = "/"; then
 126             echo -n "/ ";
 127             free_space /
 128         else
 129             echo "$f " | rev | cut -f 1 -d / | rev | tr -d '\n'
 130             free_space "$f"
 131         fi
 132         echo -n "  "
 133     done
 134     echo
 135 }
 136
 137 if test "$1" = "allspace"; then
 138     unset prev
 139     while :; do
 140         curr="$(all_free_space)"
 141         if test "$curr" != "$prev"; then
 142             echo
 143             echo -n "$(date +"%d %H:%M:%S")  $curr$(tput el)"
 144         fi
 145         prev="$curr"
 146         sleep 1
 147     done
 148 elif test "$1" = "date"; then
 149     ntpdate -q pool.ntp.org
 150 elif test "$1" = "df"; then
 151     df -h --si | grep ^Filesystem
 152     df -h --si --total | grep -e /dev/ -e ^total | sort -h -k4
 153 elif test "$1" = "dfull"; then
 154     origsec=$(date +%s)
 155     origtime="$(date -u +"%Y-%m-%d %H:%M:%S.%N")"
 156     origdf=$(( $(free_space_bytes .) - $space_val ))
 157     prevdf=$origdf
 158     ml_goalint=14
 159     ml_goaltime=9
 160     ml_dfdiff=1
 161     while :; do
 162         currtime="$(date -u +"%Y-%m-%d %H:%M:%S.%N")"
 163         currsec=$(date +%s)
 164         currdf=$(( $(free_space_bytes .) - $space_val ))
 165         goal_output="$(
 166             goal "$origtime" "$origdf" 0 "$currdf" 2>/dev/null
 167         )"
 168         dfdiff="$(( $currdf-$origdf ))"
 169         goalint=$(echo $goal_output | awk '{print $1}' | sed 's/\..*//')
 170         goaldate=$(echo $goal_output | awk '{print $2}')
 171         goaltime=$(echo $goal_output | awk '{print $3}' | sed 's/\..*//')
 172         cl_goalint=$(echo $goalint | wc -L)
 173         cl_goaltime=$(echo $goaltime | wc -L)
 174         cl_dfdiff=$(echo $dfdiff | commify | wc -L)
 175         seconds=$(echo $currsec-$origsec | bc)
 176
 177         test $cl_goalint -gt $ml_goalint && ml_goalint=$cl_goalint
 178         test $cl_goaltime -gt $ml_goaltime && ml_goaltime=$cl_goaltime
 179         test $cl_dfdiff -gt $ml_dfdiff && ml_dfdiff=$cl_dfdiff
 180
 181         if test "$(echo "$currdf < $prevdf" | bc)" = "1"; then
 182             t_diskfree="$(tput bold; tput setaf 1)"
 183             t_diskfree_reset="$(tput sgr0)"
 184         elif test "$(echo "$currdf > $prevdf" | bc)" = "1"; then
 185             t_diskfree="$(tput bold; tput setaf 2)"
 186             t_diskfree_reset="$(tput sgr0)"
 187         else
 188             t_diskfree=""
 189             t_diskfree_reset=""
 190         fi
 191
 192         if test -n "$goal_output"; then
 193             printf \
 194 "\\n"\
 195 "%-${ml_goalint}s "\
 196 "%s "\
 197 "%-${ml_goaltime}s "\
 198 "diff: %s%-${ml_dfdiff}s%s  "\
 199 "free: %s%s%s"\
 200 "%s "\
 201 "%s"\
 202                 "$goalint" \
 203                 "$goaldate" \
 204                 "$goaltime" \
 205                 "$t_diskfree" \
 206                 "$(echo $dfdiff | commify)" \
 207                 "$t_diskfree_reset" \
 208                 "$t_diskfree" \
 209                 "$(echo $currdf | commify)" \
 210                 "$t_diskfree_reset" \
 211                 "$(tput el)" \
 212                 "$(
 213                     if test $seconds -gt 0; then
 214                         printf " %s B/s" $(
 215                             printf 'scale=0; %d/%u\n' $dfdiff $seconds |
 216                                 bc | commify
 217                         )
 218                     fi
 219                 )"
 220         else
 221             printf "\\n$progname dfull: No changes yet, %s%s%s bytes free%s" \
 222                 "$t_diskfree" \
 223                 "$(echo $currdf | commify)" \
 224                 "$t_diskfree_reset" \
 225                 "$(tput el)"
 226         fi
 227         prevdf=$currdf
 228         sleep 2
 229     done
 230 elif test "$1" = "kern"; then
 231     tail -Fq /var/log/kern.log /var/log/syslog /var/log/auth.log \
 232     | grep -v " $(hostname) CRON"
 233 elif test "$1" = "space"; then
 234     unset prevlast
 235     while :; do
 236         lastspace=$(free_space .)
 237         if test "$lastspace" != "$prevlast"; then
 238             echo -n " $lastspace $(tput el)"
 239             prevlast=$lastspace
 240         fi
 241         sleep 1
 242     done
 243 elif test "$1" = "temp"; then
 244     temperature_file=/sys/devices/virtual/thermal/thermal_zone0/temp
 245     if test ! -e "$temperature_file"; then
 246         echo $progname: $temperature_file: File not found >&2
 247         echo $progname: Cannot read temperature >&2
 248         exit 1
 249     fi
 250     (
 251         echo scale=1
 252         echo -n $(cat "$temperature_file")
 253         echo / 1000
 254     ) | bc -l
 255 elif test "$1" = "temp-warn" -o "$1" = "tw"; then
 256     unset prevtemp
 257     dispfile="/tmp/sj_tw.$(date +%s).$$.tmp"
 258     if test -e "$dispfile"; then
 259         echo $progname: $dispfile: Tempfile already exists, that\'s spooky >&2
 260         exit 1
 261     fi
 262     while :; do
 263         currtemp="$($progname temp)"
 264         if test -z "$currtemp"; then
 265             echo -n "$progname: Unable to read temperature, " >&2
 266             echo \"$progname temp\" returned nothing >&2
 267             exit 1
 268         fi
 269         if test "$currtemp" != "$prevtemp"; then
 270             echo $(date -u +"%Y-%m-%dT%H:%M:%SZ") $currtemp >>~/log/temp.log
 271             echo -n " $currtemp $(tput el)"
 272             prevtemp=$currtemp
 273         fi
 274         if test $(echo "$currtemp > $opt_maxtemp" | bc) = "1"; then
 275             grep Blimey "$dispfile" 2>/dev/null | grep -q . && rm "$dispfile"
 276             if test ! -e $dispfile; then
 277                 warning="Oi! The temperature is $currtemp!"
 278                 xmessage -button Blimey -print "$warning" >"$dispfile" &
 279                 (
 280                     echo
 281                     tput setab 1
 282                     tput bold
 283                     tput setaf 3
 284                     echo -n "$progname: $warning"
 285                     tput sgr0
 286                     echo -n " "
 287                     tput el
 288                 ) >&2
 289             fi
 290         fi
 291         sleep 2
 292     done
 293 else
 294     test -d /n900/. && sudo=sudo || unset sudo
 295     while :; do
 296         $sudo ping 178.79.142.16
 297         sleep 1
 298         echo ============================================
 299     done
 300 fi