Gnu/coreutils/logname-invocation
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20.2 logname
: Print current login name
logname
prints the calling user’s name, as found in a
system-maintained file (often /var/run/utmp
or
/etc/utmp
), and exits with a status of 0. If there is no entry
for the calling process, logname
prints
an error message and exits with a status of 1.
The only options are --help
and --version
. See Common options.
An exit status of zero indicates success, and a nonzero value indicates failure.