lock test from sh script

[Igor Pokrovsky]

Hi all!

I need to check if file is locked or not (with flock) from a shell
script. I remember there was something but cannot recall what exactly.
And if possible I do not want to write my own test utility even it
is several lines in length)

Thanks,
-ip

[Dag-Erling Smørgrav]

Post by Igor Pokrovsky
I need to check if file is locked or not (with flock) from a shell
script. I remember there was something but cannot recall what exactly.
And if possible I do not want to write my own test utility even it
is several lines in length)

lockf -t0 <file> true

DES

[Pieter de Goeje]

Post by Igor Pokrovsky
Hi all!
I need to check if file is locked or not (with flock) from a shell
script. I remember there was something but cannot recall what exactly.
And if possible I do not want to write my own test utility even it
is several lines in length)
Thanks,
-ip

Perhaps you mean lockf(3) ?

[Daniel O'Connor]

Post by Igor Pokrovsky
I need to check if file is locked or not (with flock) from a shell
script. I remember there was something but cannot recall what exactly.
And if possible I do not want to write my own test utility even it
is several lines in length)

lockf -s -t 0 /path/to/file /bin/echo -n
if [ $? -eq 75 ]; then
echo file is locked
exit
fi