1
2rm -f /tmp/mysem >/dev/null 2>&1
3rm -f /tmp/sem_* >/dev/null 2>&1
4rm -f a.out
5
6for sem_id in `ipcs -s | awk '{print $2}'` ; do
7    ipcrm sem $sem_id > /dev/null 2>&1
8done 
9
10