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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

Buy it now, or read it online on Safari Bookshelf.


lastlog [options]

System administration command. Print the last login times for system accounts. Login information is read from the file /var/log/lastlog.


-tn, --timen

Print only logins more recent than n days ago.

-uname, --username

Print only login information for user name.

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