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98 lines
1.8 KiB
98 lines
1.8 KiB
#!/bin/sh
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#
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# shm_clear: clean out unattached (NATTACH=0) shm segments.
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# See ipcs(1) and ipcrm(1). Tested on Linux and Solaris.
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#
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# Usage:
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# shm_clear list and prompt for removal of your unattached shm segments.
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# shm_clear -y assume "yes" to all the removal prompts.
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# shm_clear -l only list (all of) your shm segments and exit.
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#
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#set -xv
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if echo "$1" | grep '^-h' > /dev/null; then
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# -h or -help
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tail +3 $0 | head -9
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exit
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fi
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if [ "X$USER" = "X" ]; then
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USER=$LOGNAME
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fi
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l_arg="shmid.*owner|CREATOR|$USER"
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# set up OS dependent cmdline opts, etc.
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if [ `uname` = "Linux" ]; then
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m_arg="-m"
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r_arg="shm"
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g_arg="^0x"
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s_cmd="ipcs $m_arg -i %ID"
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awkcut='{print $2, $6}'
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elif [ `uname` = "SunOS" ]; then
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m_arg="-ma"
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r_arg="-m"
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g_arg="^m"
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s_cmd="ipcs $m_arg | egrep ' %ID |CREATOR' | grep -v IPC.status"
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awkcut='{print $2, $9}'
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else
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echo unsupported OS: `uname`
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exit 1
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fi
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list() {
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if [ "X$1" = "X-L" ]; then
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l_arg="$l_arg|."
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echo "All shm segments for all:"
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else
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echo "All shm segments for $USER:"
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fi
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ipcs $m_arg | egrep "$l_arg"
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echo
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}
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show() {
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cmd=`echo "$s_cmd" | sed -e "s/%ID/$1/g"`
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eval $cmd
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}
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remove() {
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echo ipcrm $r_arg $1
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ipcrm $r_arg $1
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}
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if [ "X$1" = "X-l" -o "X$1" = "X-L" ]; then
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# list only. both attached and unattached listed.
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list $1
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exit 0
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fi
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if [ "X$1" = "X-y" ]; then
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shift
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yes=1 # assume "yes" to all delete questions.
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else
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yes=""
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fi
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list
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ids=`ipcs $m_arg | grep "$g_arg" | grep $USER | awk "$awkcut" | grep ' 0$' | awk '{print $1}'`
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if [ "X$ids" = "X" ]; then
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echo "No unattached shmids for $USER."
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fi
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for id in $ids
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do
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if [ $yes ]; then
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:
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else
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echo "-------------------------------------"
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show $id
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printf "\nDelete? [y]/n "
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read x
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if echo "$x" | grep -i n > /dev/null; then
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continue
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fi
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fi
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remove $id
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done
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