Information Commands

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Unix

 Information Commands :

who : displays who were logged into the system

W : gives you who logged in what they are doing(like which shell they are using)

Who am i : displays currently using user and login time


man : it is used to display complete information of command including options



whatis : Gives you short line description of commands



finger : Finger command is used to display the information of system users


[mssusr18@MSS-DB2 omsai]$ finger



Login     Name       Tty      Idle  Login Time   Office     Office Phone

mssusr1              pts/7       4  Jun 12 12:43 (172.17.14.48)

mssusr18             pts/0          Jun 12 12:11 (172.17.13.29)

mssusr3              pts/3          Jun 12 12:39 (172.17.14.127)

mssusr4              pts/5       1  Jun 12 12:40 (172.17.14.187)

mssusr5              pts/6       2  Jun 12 12:41 (172.17.14.210)

mssusr6              pts/2          Jun 12 12:35 (172.17.14.43)

mssusr7              pts/4          Jun 12 12:40 (172.17.14.199)

mssusr9              pts/1          Jun 12 12:23 (172.17.14.199)


history : shows recently executed commands history


 

id : returns user current user id




logname : returns user name




tty : returns user terminal type



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