TLDR Search

Enter a command. For example: tmutil, carthage, sntpd, nettop.

sed

Edit text in a scriptable manner. More information: https://ss64.com/osx/sed.html.

• Replace the first occurrence of a string in a file, and print the result:
   
  sed 's/{{find}}/{{replace}}/' {{filename}}
   
• Replace all occurrences of an extended regular expression in a file:
   
  sed -E 's/{{regular_expression}}/{{replace}}/g' {{filename}}
   
• Replace all occurrences of a string [i]n 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}}
   
• Print only text between n-th line till the next empty line:
   
  sed -n '{{line_number}},/^$/p' {{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}}
   
• [d]elete the line at the specific line number [i]n a file, overwriting the file:
   
  sed -i '' '{{line_number}}d' {{filename}}