IPCS command

[innovative2001]

Hello,

I am not expert in perl, I have found one command

# ipcs -s | grep nobody | perl -e 'while (<STDIN>) { @a=split(/\s+/); print `ipcrm sem $a[1]`}'

any idea what it will do?

 

[ffeingol]

# ipcs -s | grep nobody | perl -e 'while (<STDIN>) { @a=split(/\s+/); print `ipcrm sem $a[1]`}'

the ipcs -s part lists the semaphore arrays. grep nobody looks for the ones owned by nobody (apache prob.). the per code loops thorugh that list and prints the 1st item in the list (which is the semaphore id.

Frank