Awk
Examples
- Prepend a variable string ($STRING_TO_PREPEND) at the beginning of every line
cat file.txt | awk '{print "'$STRING_TO_PREPEND' "$0}'[1]
In case text to prepend is a variable ($PREPEND_TEXT_VAR):
echo "$ORIGINAL_TEXT" | awk -v AWK_PREPEND_VAR="$PREPEND_TEXT_VAR" '{print AWK_PREPEND_VAR" "$0}'
Prepend time before every line
echo "$ORIGINAL_TEXT" | awk -v time="$(date)" '{print time" "$0}'
- Remove leading spaces at the beginning of a line:
awk ' {$1=$1} 1 '[2]
- Print lines if field fith value ($5) is smaller than 100:
awk '$FIELD_NUMER>VALUE'- Example:
awk '$5<100'
See also
ack, ag, grep,egrep, fgrep,agrep,ngrep,pgrep,awk,sed,strings,tr,tail,mtail,git grep,wc,uniq,LogQL,findstr (Windows),rg, git-grep, cut- Editors:
vi, vim,sed,awk, emacs,lineinfile (Ansible), Atom,paste, Neovim, Rider,visudo, vipw,update-alternatives,nano,more, less,.vimrc,set (vi)zed
Advertising:
