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Full Discussion: possible sed usage
Top Forums Shell Programming and Scripting possible sed usage Post 302240906 by madpenguin on Saturday 27th of September 2008 01:43:35 AM
Old 09-27-2008
possible sed usage

Sorry about the title. I'm assuming I want sed anyway...

Here's the deal:

I have hundreds of files in a folder and they all are named with the same format.

$NAME-$VERSION-$ARCH-$BUILD

This is Slackwares' /var/log/packages directory BTW...

$BUILD is what I'm focusing on. It could be just "1" or it could be "1foo" or it could be "1foo357" or "1foo357bar"

I'm trying to isolate just the "1" regardless of what comes after it. I came to the conclusion that just identifying the last hyphen and then grabbing the very next number would be the easiest way.

This is what worked great until I started adding custom build tags like foo and foo357:

Code:
installed=$(ls /var/log/packages/$NAME-[[:digit:].]* | sed 's/^.*\(.\)$/\1/')

so if $build = 1foo357bar, then the above gives me "r"... The number I want will ALWAYS be after the last hyphen. There is a small chance that the number could reach double digits but it would be rare.

Any ideas? Thanks much for your help. I'm really stumped for some reason.
 

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MK-BUILD-DEPS(1)														  MK-BUILD-DEPS(1)

NAME
mk-build-deps - build a package satisfying a package's build-dependencies SYNOPSIS
mk-build-deps --help|--version mk-build-deps [options] control file | package name ... DESCRIPTION
Given a package name and/or control file, mk-build-deps will use equivs to generate a binary package which may be installed to satisfy all the build dependencies of the given package. If --build-dep and/or --build-indep are given, then the resulting binary package(s) will depend solely on the Build-Depends/Build-Depends-Indep dependencies, respectively. OPTIONS
-i, --install Install the generated packages and its build-dependencies. -t, --tool When installing the generated package use the specified tool. (default: apt-get --no-install-recommends) -r, --remove Remove the package file after installing it. Ignored if used without the --install switch. -a foo, --arch foo If the source package has architecture-specific build dependencies, produce a package for architecture foo, not for the system architecture. (If the source package does not have architecture-specific build dependencies, the package produced is always for the pseudo-architecture all.) -B, --build-dep Generate a package which only depends on the source package's Build-Depends dependencies. -A, --build-indep Generate a package which only depends on the source package's Build-Depends-Indep dependencies. -h, --help Show a summary of options. -v, --version Show version and copyright information. -s, --root-cmd Use the specified tool to gain root privileges before installing. Ignored if used without the --install switch. AUTHOR
mk-build-deps is copyright by Vincent Fourmond and was modified for the devscripts package by Adam D. Barratt <adam@adam-barratt.org.uk>. This program comes with ABSOLUTELY NO WARRANTY. You are free to redistribute this code under the terms of the GNU General Public License, version 2 or later. Debian Utilities 2013-12-23 MK-BUILD-DEPS(1)
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