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Top Forums Shell Programming and Scripting insert a header in a huge data file without using an intermediate file Post 302286408 by angheloko on Wednesday 11th of February 2009 04:38:51 AM
Old 02-11-2009
Why not create an ed script instead? And then use 'patch'? But that would still require a temp file in the background though you wouldn't notice.
 

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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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