.. -*- coding: utf-8; -*-

========
 Shell.
========
.. contents::
   :local:

Quoting.
========

http://www.mpi-inf.mpg.de/~uwe/lehre/unixffb/quoting-guide.html
  A Guide to Unix Shell Quoting

Portability.
============

http://code.dogmap.org/lintsh/
  lintsh is a Bourne shell that optionally warns about suspicious
  or nonportable constructs
http://www.gnu.org/software/autoconf/manual/html_node/Portable-Shell.html
  Portable Shell Programming

Kill processes after timeout.
=============================
::

  $ yes xxx& p1=$! ; yes ===& p2=$! ; sleep 2; kill $p1; kill $p2