Difference between revisions of "Useful Linux commands"

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* shows a tree of processes! <ref>https://www.howtoforge.com/linux-pstree-command/</ref>
 
* shows a tree of processes! <ref>https://www.howtoforge.com/linux-pstree-command/</ref>
 +
 +
== du -sh foldername ==
 +
 +
* (h)uman readable (s)ummary for disk usage of foldername <ref>https://www.ostechnix.com/find-size-directory-linux/</ref>
  
 
== References ==
 
== References ==
  
 
<references />
 
<references />

Revision as of 17:05, 11 December 2018

grep

grep -nr 'yourString*' .

The dot at the end searches the current directory. Meaning for each parameter:

-n            Show relative line number in the file
'yourString*' String for search, followed by a wildcard character
-r            Recursively search subdirectories listed
.             Directory for search (current directory)

How to grep ps output with headers [1]

ps -ef | egrep "Download|PID"

FreeBSD

  • su:
     The su utility requests appropriate user credentials via PAM and switches
     to	that user ID (the default user is the superuser).  A shell is then
     executed.

pstree

  • shows a tree of processes! [2]

du -sh foldername

  • (h)uman readable (s)ummary for disk usage of foldername [3]

References