From e9a910b33c7837b4b868e3abda18eb4810df7f02 Mon Sep 17 00:00:00 2001 From: Leah Rowe Date: Sat, 4 Oct 2025 09:14:33 +0100 Subject: config/git: import suckless sbase i currently use the output of sha512sum in several places of xbmk, which is a bit unreliable in case output changes. other cases where i use util outputs in variables are probably reliable, because i'm using mostly posix utilities in those. to mitigate this, i now import suckless sbase, which has a reasonable sha512sum implementation. *every* binary it builds is being placed in build.list, because i'll probably start using more of them. for example, i may start modifying the "date" implementation, adding the GNU-specific options that i need as mentioned on init.sh i'm importing it in util/ because the sha512sum util is needed for verifying project sources, so if sbase itself is a "project source", that means we can into a chicken and egg bootstrapping problem. this is sbase at revision: 055cc1ae1b3a13c3d8f25af0a4a3316590efcd48 Signed-off-by: Leah Rowe --- util/sbase/flock.1 | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 util/sbase/flock.1 (limited to 'util/sbase/flock.1') diff --git a/util/sbase/flock.1 b/util/sbase/flock.1 new file mode 100644 index 00000000..9dfaf394 --- /dev/null +++ b/util/sbase/flock.1 @@ -0,0 +1,35 @@ +.Dd October 8, 2015 +.Dt FLOCK 1 +.Os sbase +.Sh NAME +.Nm flock +.Nd tool to manage locks on files +.Sh SYNOPSIS +.Nm +.Op Fl nosux +.Ar file +.Ar cmd Op arg ... +.Sh DESCRIPTION +.Nm +is used to manage advisory locks on open files. +It is commonly used to prevent long running cron jobs from running in +parallel. +If +.Ar file +does not exist, it will be created. +.Sh OPTIONS +.Bl -tag -width Ds +.It Fl n +Set non-blocking mode on the lock. +Fail immediately if the lock cannot be acquired. +.It Fl o +Close the file descriptor before exec to avoid having the exec'ed +program holding on to the lock. +.It Fl s +Acquire a shared lock. +.It Fl u +Release the lock. +.It Fl x +Acquire an exclusive lock. +This is the default. +.El -- cgit v1.2.1