awk '{ print "../" $0 }' < filelist.txt
Variables :
uname -a | awk -v h=$HOSTNAME '{ print h ":" $0 }'
dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -n | awk '{ SUM += $1} END { print SUM/1024/1024 }'
Arrays:
history | awk '{a[$2]++ } END { for(i in a){print a[i] " " i}}' | sort -rn | head
filter :
cat "$1" \
| awk -v t=0 't==1 { print $0 } '"/${from}/"'{print $0; t=1} ' \
| awk -v t=0 "/${to}/{t=1}"'t==0 { print $0 }' \
> "$1.tmp"
echo -e '{\n{\n}\n}' | awk -v l=O ' '"/{/"'{++l; print $0 l; } '"/}/"'{ --l; print $0 l; } '
echo -e '{\n{\n}\n}' | awk -v l=3 '{for (i = 0 ; i <= l ; i++) printf ","; printf ".\n" ; }'
echo -e '{\n{\n}\n}' | awk -v l=0 '{for (i = 0 ; i < l ; i++) printf "\t"; } '"/{/"'{++l; print $0 l; } '"/}/"'{ --l; print $0 l; } '
echo -e '{ one\n{ two\n} two\n} one' | awk -v l=0 ' '"/{/"'{++l; } {for (i = 0 ; i < l ; i++) printf "\t"; } { print $0 " #" l; } '"/}/"'{ --l; } '
==== RUBY ====
* http://tomayko.com/writings/awkward-ruby
# thx fb pok:
#!/usr/bin/env ruby │+
# Usage: cat source.txt | ./sploup_pipe.rb │+
lev = -1; STDIN.each do |line| │+_
puts "\t" * ((open = line =~ /^\{/) ? (lev + 1) : (lev)) + line │+
[ lev = lev.method(open ? :+ : :-).call 1 │+
: end
lev = -1; $<.each{|line| puts "\t" * ((open = line =~ /^\{/) ? (lev + 1) : (lev)) + line; lev = lev.method(open ? :+ : :-).call 1}