I have a Perl script that does various installation steps to set up a development box for our company. It runs various shell scripts, some of which crash due to lower than required ulimit
s (specifically, stack size -s
in my case).
Therefore, I'd like to set a ulimit
that would apply to all scripts (children
) started from within my main Perl one, but I am not sure how to achieve that - any attempts at calling ulimit from within the script only set it on that specific child shell, which immediately exits.
I am aware that I can call ulimit
before I run the Perl script or use /etc/security/limits.conf
but I don't want the user to know any of this - they should only know how to run the script, which should take care of all of that for them.
I can also run ulimit
every time I run a command, like this ulimit -s BLA; ./cmd
but I don't want to duplicate this every time and I feel like there's a better, cleaner solution out there.
Another crazy "workaround" is to make a wrapper script called BLA.sh which would set ulimit and call BLA.pl, but again, it's a hack in my mind and now I'd have 2 scripts (I could even make BLA.pl call itself with "ulimit -s BLA; ./BLA.pl --foo" and act differently based on whether it sees --foo or not but that's even hackier than before).
Finally, apparently I could install BSD::Resource but I'd like to avoid using external dependencies.
So what is THE way to set the ulimit from within a Perl script and make it apply to all children?
Thank you.