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#!/bin/bash
if [ "$1" = "--help" -o "$1" = "-h" ]; then
echo "Syntax: `basename $0` [pid]..."
echo "If no pids are specified, all processes are listed"
exit 1
fi
cd /proc 2> /dev/null || { echo "No /proc directory."; exit 1; }
get_cmdline() {
local cmd
cmd="`tr '\000' ' ' < $1/cmdline`"
test -z "$cmd" && cmd="[`tr -d '()' < $1/stat | cut -d' ' -f2`]"
echo "$cmd"
}
get_rss() {
grep "^VmRSS:" $1/status | awk '{ print $2 }'
}
# Determine the width of the stdout tty (if it is a tty) for clipping
width=`stty -F $$/fd/1 size 2> /dev/null | awk '{ print $2 }'`
clip_line() {
test -n "$width" && expr substr "$1" 1 "$width" || echo "$1"
}
test -z "$1" && set -- `echo [0-9]* | tr " " "\n" | sort -n`
header=$(printf "%5s %6s %6s %6s %6s %6s %s\n" \
PID VSZ DEVMAP LIBMAP ALLOC RSS CMDLINE)
clip_line "$header"
for pid; do
totalmap=0
devmap=0
libmap=0
alloc=0
test -f $pid/maps || continue
{ while read -u 99 range _ _ _ _ lib; do
size=$(( -(0x${range/-/-0x}) ))
let totalmap+=size
case $lib in
/dev/*)
let devmap+=size
;;
"")
let alloc+=size
;;
*)
let libmap+=size
esac
done; } 99< $pid/maps # '99<' is a workaround for a stupid bash bug
output=$(printf "%5d %6d %6d %6d %6d %6d %s\n" \
$pid $((totalmap/1024)) $((devmap/1024)) $((libmap/1024)) \
$((alloc/1024)) "`get_rss $pid`" "`get_cmdline $pid`")
clip_line "$output"
done
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