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Full Discussion: Insane redirection behavior
Top Forums Shell Programming and Scripting Insane redirection behavior Post 302708801 by alister on Tuesday 2nd of October 2012 09:00:28 AM
Old 10-02-2012
The first script is running sed in a subshell environment; the second is not. The subshell is a byproduct of the shell's pipeline implementation. The difference is that when $i is incremented in a subshell, the new value is not available in the parent shell.

One workaround would be to increment the variable prior to calling sed.

Regards,
Alister
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LEARN ABOUT NETBSD

edit-patch

EDIT-PATCH(1)						      General Commands Manual						     EDIT-PATCH(1)

NAME

       edit-patch, add-patch - tool for preparing patches for Debian source packages

SYNOPSIS

       edit-patch path/to/patch

       add-patch path/to/patch

DESCRIPTION

       edit-patch is a wrapper script around the Quilt, CDBS, and dpatch patch systems. It simplifies the process of preparing and editing patches
       to Debian source packages and allows the user to not have to be concerned with which patch system is in use.   Run  from  inside  the  root
       directory of the source package, edit-patch can be used to edit existing patches located in debian/patches.

       It can also be used to incorporate new patches.	If pointed at a patch not already present, it will copy the patch to debian/patches in the
       correct format for the patch system in use.  Next, the patch is applied and a subshell is opened in order to edit the patch.   Typing  exit
       or pressing Ctrl-d will close the subshell and launch an editor to record the debian/changelog entry.

       edit-patch  is  integrated  with  the  Bazaar  and Git version control systems.	The patch will be automatically added to the tree, and the
       debian/changelog entry will be used as the commit message.

       If no patch system is present, the patch is applied inline, and a copy is stored in debian/patches-applied.

       add-patch is the non-interactive version of edit-patch.	The patch will be incorporated but no editor or subshell will be spawned.

AUTHORS

       edit-patch was written by Daniel Holbach <daniel.holbach@canonical.com>,  Michael  Vogt	<michael.vogt@canonical.com>,  and  David  Futcher
       <bobbo@ubuntu.com>.

       This manual page was written by Andrew Starr-Bochicchio <a.starr.b@gmail.com>.

       Both are released under the terms of the GNU General Public License, version 3.

DEBIAN
								 Debian Utilities						     EDIT-PATCH(1)
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