TLDR Search

Enter a command. For example: pest, hg root, w3m, montage, pnpx.

sed

Edit text in a scriptable manner. More information: https://www.gnu.org/software/sed/manual/sed.html.

• Replace the first occurrence of a regular expression in each line of a file, and print the result:
   
  sed 's/{{regular_expression}}/{{replace}}/' {{filename}}
   
• Replace all occurrences of an extended regular expression in a file, and print the result:
   
  sed -r 's/{{regular_expression}}/{{replace}}/g' {{filename}}
   
• Replace all occurrences of a string in a file, overwriting the file (i.e. in-place):
   
  sed -i 's/{{find}}/{{replace}}/g' {{filename}}
   
• Replace only on lines matching the line pattern:
   
  sed '/{{line_pattern}}/s/{{find}}/{{replace}}/' {{filename}}
   
• Delete lines matching the line pattern:
   
  sed '/{{line_pattern}}/d' {{filename}}
   
• Print the first 11 lines of a file:
   
  sed 11q {{filename}}
   
• Apply multiple find-replace expressions to a file:
   
  sed -e 's/{{find}}/{{replace}}/' -e 's/{{find}}/{{replace}}/' {{filename}}
   
• Replace separator / by any other character not used in the find or replace patterns, e.g. #:
   
  sed 's#{{find}}#{{replace}}#' {{filename}}