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=0.9.0
  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 -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 [ -z "$1" ] && { echo $progname: No command specified >&2; exit 1; }
 138 if test "$1" = "allspace"; then
 139     unset prev
 140     while :; do
 141         curr="$(all_free_space)"
 142         if test "$curr" != "$prev"; then
 143             echo
 144             echo -n "$(date +"%d %H:%M:%S")  $curr$(tput el)"
 145         fi
 146         prev="$curr"
 147         sleep 1
 148     done
 149 elif test "$1" = "date"; then
 150     ntpdate -q pool.ntp.org
 151 elif test "$1" = "df"; then
 152     df -h --si | grep ^Filesystem
 153     df -h --si --total | grep -e /dev/ -e ^total | sort -h -k4
 154 elif test "$1" = "dfull"; then
 155     origsec=$(date +%s)
 156     origtime="$(date -u +"%Y-%m-%d %H:%M:%S.%N")"
 157     origdf=$(( $(free_space_bytes .) - $space_val ))
 158     prevdf=$origdf
 159     ml_goalint=14
 160     ml_goaltime=9
 161     ml_dfdiff=1
 162     while :; do
 163         currtime="$(date -u +"%Y-%m-%d %H:%M:%S.%N")"
 164         currsec=$(date +%s)
 165         currdf=$(( $(free_space_bytes .) - $space_val ))
 166         goal_output="$(
 167             goal "$origtime" "$origdf" 0 "$currdf" 2>/dev/null
 168         )"
 169         dfdiff="$(( $currdf-$origdf ))"
 170         goalint=$(echo $goal_output | awk '{print $1}' | sed 's/\..*//')
 171         goaldate=$(echo $goal_output | awk '{print $2}')
 172         goaltime=$(echo $goal_output | awk '{print $3}' | sed 's/\..*//')
 173         cl_goalint=$(echo $goalint | wc -L)
 174         cl_goaltime=$(echo $goaltime | wc -L)
 175         cl_dfdiff=$(echo $dfdiff | hum | wc -L)
 176         seconds=$(echo $currsec-$origsec | bc)
 177
 178         test $cl_goalint -gt $ml_goalint && ml_goalint=$cl_goalint
 179         test $cl_goaltime -gt $ml_goaltime && ml_goaltime=$cl_goaltime
 180         test $cl_dfdiff -gt $ml_dfdiff && ml_dfdiff=$cl_dfdiff
 181
 182         if test "$(echo "$currdf < $prevdf" | bc)" = "1"; then
 183             t_diskfree="$(tput bold; tput setaf 1)"
 184             t_diskfree_reset="$(tput sgr0)"
 185         elif test "$(echo "$currdf > $prevdf" | bc)" = "1"; then
 186             t_diskfree="$(tput bold; tput setaf 2)"
 187             t_diskfree_reset="$(tput sgr0)"
 188         else
 189             t_diskfree=""
 190             t_diskfree_reset=""
 191         fi
 192
 193         if test -n "$goal_output"; then
 194             printf \
 195 "\\n"\
 196 "%-${ml_goalint}s "\
 197 "%s "\
 198 "%-${ml_goaltime}s "\
 199 "diff: %s%-${ml_dfdiff}s%s  "\
 200 "free: %s%s%s"\
 201 "%s "\
 202 "%s"\
 203                 "$goalint" \
 204                 "$goaldate" \
 205                 "$goaltime" \
 206                 "$t_diskfree" \
 207                 "$(echo $dfdiff | hum)" \
 208                 "$t_diskfree_reset" \
 209                 "$t_diskfree" \
 210                 "$(echo $currdf | hum)" \
 211                 "$t_diskfree_reset" \
 212                 "$(tput el)" \
 213                 "$(
 214                     if test $seconds -gt 0; then
 215                         printf " %s B/s" $(
 216                             printf 'scale=0; %d/%u\n' $dfdiff $seconds |
 217                                 bc | hum
 218                         )
 219                     fi
 220                 )"
 221         else
 222             printf "\\n$progname dfull: No changes yet, %s%s%s bytes free%s" \
 223                 "$t_diskfree" \
 224                 "$(echo $currdf | hum)" \
 225                 "$t_diskfree_reset" \
 226                 "$(tput el)"
 227         fi
 228         prevdf=$currdf
 229         sleep 2
 230     done
 231 elif test "$1" = "kern"; then
 232     tail -Fq /var/log/kern.log /var/log/syslog /var/log/auth.log \
 233     | grep -v " $(hostname) CRON"
 234 elif test "$1" = "space"; then
 235     unset prevlast
 236     while :; do
 237         lastspace=$(free_space .)
 238         if test "$lastspace" != "$prevlast"; then
 239             echo -n " $lastspace $(tput el)"
 240             prevlast=$lastspace
 241         fi
 242         sleep 1
 243     done
 244 elif test "$1" = "temp"; then
 245     temperature_file=/sys/devices/virtual/thermal/thermal_zone0/temp
 246     if test ! -e "$temperature_file"; then
 247         echo $progname: $temperature_file: File not found >&2
 248         echo $progname: Cannot read temperature >&2
 249         exit 1
 250     fi
 251     (
 252         echo scale=1
 253         echo -n $(cat "$temperature_file")
 254         echo / 1000
 255     ) | bc -l
 256 elif test "$1" = "temp-warn" -o "$1" = "tw"; then
 257     unset prevtemp
 258     dispfile="/tmp/sj_tw.$(date +%s).$$.tmp"
 259     if test -e "$dispfile"; then
 260         echo $progname: $dispfile: Tempfile already exists, that\'s spooky >&2
 261         exit 1
 262     fi
 263     while :; do
 264         currtemp="$($progname temp)"
 265         if test -z "$currtemp"; then
 266             echo -n "$progname: Unable to read temperature, " >&2
 267             echo \"$progname temp\" returned nothing >&2
 268             exit 1
 269         fi
 270         if test "$currtemp" != "$prevtemp"; then
 271             echo $(date -u +"%Y-%m-%dT%H:%M:%SZ") $currtemp >>~/log/temp.log
 272             echo -n " $currtemp $(tput el)"
 273             prevtemp=$currtemp
 274         fi
 275         if test $(echo "$currtemp > $opt_maxtemp" | bc) = "1"; then
 276             grep Blimey "$dispfile" 2>/dev/null | grep -q . && rm "$dispfile"
 277             if test ! -e $dispfile; then
 278                 warning="Oi! The temperature is $currtemp!"
 279                 xmessage -button Blimey -print "$warning" >"$dispfile" &
 280                 (
 281                     echo
 282                     tput setab 1
 283                     tput bold
 284                     tput setaf 3
 285                     echo -n "$progname: $warning"
 286                     tput sgr0
 287                     echo -n " "
 288                     tput el
 289                 ) >&2
 290             fi
 291         fi
 292         sleep 2
 293     done
 294 elif test "$1" = "ping"; then
 295     test -d /n900/. && sudo=sudo || unset sudo
 296     while :; do
 297         $sudo ping 178.79.142.16
 298         sleep 1
 299         echo ============================================
 300     done
 301 else
 302     echo $progname: $1: Unknown command >&2
 303     exit 1
 304 fi