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GNU Core-utils

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20.2 logname: Print current login name

logname prints the calling user's name, as found in the file `/etc/utmp', and exits with a status of 0. If there is no `/etc/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'. See section 2. Common options.


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