Mittwoch, 11. November 2015

Usefull (Oracle) Linux commands

This blog is a cheat slip of commands I use on a regular basis, but where I also google for all the time.

  • Check the running Linux distribution / Operating system Version
    # cat /etc/issue.net | head -1
    Oracle Linux Server release 5.7
    or since Oracle Linux 6:# cat /etc/oracle-release
    Oracle Linux Server release 7.3
  • Check for ports in use
    $ netstat -nplt
  •  ssh using private key and port forewarding
    $ ssh oracle@«ipadress» -i .ssh/id_rsa -L 5503:localhost:5500
  • search for a string, i.e. "ol7.localdomain"
    $ grep -r ol7.localdomain *- if your sear phrase contains blanks, put the search term in ""
    - recursive = -r
    - case in-sensitive = -i
  • check, if a package is installed in your linux distribution (e.g. a JDK rpm):
    # rpm -aq | grep -i jdk
  • to be continued ...