Difference between revisions of "Sed"

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(Tricks)
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;<code>sed 's/\r//' filename > newfilename</code>
 
;<code>sed 's/\r//' filename > newfilename</code>
 
:dos2unix substitute, remove all dos line endings.
 
:dos2unix substitute, remove all dos line endings.
 +
 +
;<code>sed -i 'commands' filename</code>
 +
:Edit the file directly (inplace) by default the result is sent to standard output
  
 
=Basics=
 
=Basics=

Revision as of 19:25, 13 October 2019

Check the APO unix pages for more.

Tricks

sed 's/\r//' filename > newfilename
dos2unix substitute, remove all dos line endings.
sed -i 'commands' filename
Edit the file directly (inplace) by default the result is sent to standard output

Basics

sed 's/<old_string>/<new_string>/g' <file>
Substitute, no whitespace is allowed after the command (s), the first character following s is the fieldseperator./g substitutes all matching patterns in a line.
sed 's/pattern(with)sub(patterns)/\1 newpartofstring \2/' <file>
\1 and \2 refer to the subpatterns between brackets ().
sed '/<pattern>/d'
Delete matching line. !d negates the match => delete all lines not matching.