Unix Commands (BASIC)

Getting help
  • man – view manual pages for Unix commands
Unix users
  • id– print user identity
For example:

[oracle@BAKUANARDBDB ~]$ id

uid=502(oracle) gid=501(oinstall) groups=501(oinstall),502(dba),503(oper),506(asmdba) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[oracle@BAKUANARDBDB ~]$

Unix file operations
  • ls - list files and directories
  • cat – concatenate files and show contents to the standard output
  • cp – copy
  • rm – remove the file
  • mv – move the file
Unix directory management commands
  • cd – change directory
  • pwd– confirm current directory
  • in– make links and symlinks to files and directories
  • mkdir– make new directory
  • rmdir– remove empty directories
Unix system status commands
  • uptime – find out how long the system has been up
For example:

oracle@BAKUANARDBDB ~]$ uptime

 11:21:17 up 22 days, 16:18, 4 users, load average: 0.01, 0.02, 0.00
  • who - find out who is logged into the system
  • uname - print Unix system information
Process management
  • ps – process information
  • top - show tasks and system status

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