Difference between revisions of "Useful Linux commands"

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== chown ==
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<code>
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chown -R nobody:users /mnt/disk1/Download
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</code>
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== grep ==
 
== grep ==
  

Revision as of 15:24, 15 December 2018

chown

chown -R nobody:users /mnt/disk1/Download

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]

lsof -ad3-999 -c rsync

  • to see what files rsync currently has opened [4]

References