`logname': Print current login name =================================== `logname' prints the calling user's name, as found in the file `/var/run/utmp', and exits with a status of 0. If there is no `/var/run/utmp' entry for the calling process, `logname' prints an error message and exits with a status of 1. The only options are `--help' and `--version'. Note: Common options.
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