Print specific columns with awk

More linux commands

• Sum a column with awk
  awk '{sum += $2} END {print sum}' file.txtcopy

  Sum values in column 2 of a text file

• Delete lines matching pattern
  sed -i '/^#/d' config.confcopy

  Remove all comment lines starting with #

• Multi-line sed replacement
  sed -n '/START/,/END/p' file.txtcopy

  Print block of text between START and END markers

• Unique sorted values
  sort file.txt | uniq -c | sort -rncopy

  Count occurrences of each unique line

• Show users logged in
  who -H && wcopy

  Active user sessions and what they are running

all 133 linux commands →