TLDR
Enter a command. For example: ssh keygen, git subtree, flac.

awk

 
A versatile programming language for working on files. More information: https://github.com/onetrueawk/awk.
 
  • Print the fifth column (a.k.a. field) in a space-separated file:
     
    awk '{print $5}' {{filename}}
     
  • Print the second column of the lines containing "foo" in a space-separated file:
     
    awk '/{{foo}}/ {print $2}' {{filename}}
     
  • Print the last column of each line in a file, using a comma (instead of space) as a field separator:
     
    awk -F ',' '{print $NF}' {{filename}}
     
  • Sum the values in the first column of a file and print the total:
     
    awk '{s+=$1} END {print s}' {{filename}}
     
  • Print every third line starting from the first line:
     
    awk 'NR%3==1' {{filename}}
     
  • Print different values based on conditions:
     
    awk '{if ($1 == "foo") print "Exact match foo"; else if ($1 ~ "bar") print "Partial match bar"; else print "Baz"}' {{filename}}
     
  • Print all lines where the 10th column value equals the specified value:
     
    awk '($10 == value)'
     
  • Print all the lines which the 10th column value is between a min and a max:
     
    awk '($10 >= min_value && $10 <= max_value)'

This is a tldr pages (source, CC BY 4.0) web wrapper for cheat-sheets.org. All commands, popular commands, most used linux commands. Referrals. Progressive Web Application (PWA) version to install on your device.