utilidades

#recursive find & replace in contents http://unix.stackexchange.com/questions/112023/how-can-i-replace-a-string-in-a-files

find . -type f -exec sed -i 's/SEARCH/REPLACE/g' {} +

# Replace text in multiple filenames (only first lvl)
for i in *; do mv "$i" "${i//bartik/semanticui}"; done

#buscar lineas que NO contengan cierta palabra
^((?!SEARCH).)*$

# Vim bring n lines from other file 
:r! sed -n 147,227p /path/to/foo/foo.c