The Basics awk is treat each line as a table, by default space are separators of columns. General syntax is awk 'search {action}' file_to_parse. 1# Give the value higher than 75000 in column $4 2df | awk '$4 > 75000' 3 4# Print the all line when column $4 is higher than 75000 5df | awk '$4 > 75000 {print $0}' But if...

The Basics 1sed -e '…' -e '…' # Several execution 2sed -i # Replace in place 3sed -r # Play with REGEX 4 5# The most usefull 6sed -e '/^[ ]*#/d' -e '/^$/d' <fich.> # openfile without empty or commented lines 7sed 's/ -/\n -/g' # replace all "-" with new lines 8sed 's/my_match.*/ /g' # remove from the match till end of...