I just stumbled upon a difference between using awk on the commandline and using it in a shellscript.
I have a variable, e.g.: PROG=vim
then i want to check if the package with this name is installed: TEMPVAL=$(dpkg -l | awk '{ if ($2 == "$PROG") print $2 }') (Im using Tempval later in an condition to check if it is installed)
Running this on the commandline works fine. In the shellscript TEMPVAL is always empty.
btw "toinstall" just contains some package names to be installed and comments prefixed with #
full script:
Code:
#!/bin/bash
for prog in `cat toinstall | grep -vP "^#" | grep -vP "^$"`
do
TEMPVAL=$(`dpkg -l | awk '{ if ($2 == "${prog}") print $2}'`)
if [ "$TEMPVAL" == "" ]
then
sudo apt-get install -y $prog
fi
done
bash -x output:
Code:
+ for prog in '`cat toinstall | grep -vP "^#" | grep -vP "^$"`'
+++ dpkg -l
+++ awk '{ if ($2 == "${prog}") print $2}'
+ TEMPVAL=
+ '[' '' == '' ']'
+ sudo apt-get install -y vim
Whats the Problem? I already tried playing with the quotation, but nothing worked. Hope somebody can help me. I'd also appreciate hints or tips if theres a more convenient way of doing what i want to do
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File1.txt
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Discussion started by: Tim2424
4 Replies
LEARN ABOUT DEBIAN
chdist
CHDIST(1)CHDIST(1)NAME
chdist - script to easily play with several distributions
SYNOPSIS
chdist [options] [command] [command parameters]
DESCRIPTION
chdist is a rewrite of what used to be known as 'MultiDistroTools' (or mdt). Its use is to create 'APT trees' for several distributions,
making it easy to query the status of packages in other distribution without using chroots, for instance.
OPTIONS -h, --help
Provide a usage message.
-d, --data-dir DIR
Choose data directory (default: $HOME/.chdist/).
-a, --arch ARCH
Choose architecture (default: `dpkg --print-architecture`).
--version
Display version information.
COMMANDS
create DIST [URL RELEASE SECTIONS]
Prepare a new tree named DIST
apt-get DIST <update|source|...>
Run apt-get inside DIST
apt-cache DIST <show|showsrc|...>
Run apt-cache inside DIST
apt-rdepends DIST [...]
Run apt-rdepends inside DIST
src2bin DIST SRCPKG
List binary packages for SRCPKG in DIST
bin2src DIST BINPKG
List source package for BINPKG in DIST
compare-packages DIST1 DIST2 [DIST3, ...]
compare-bin-packages DIST1 DIST2 [DIST3, ...]
List versions of packages in several DISTributions
compare-versions DIST1 DIST2
compare-bin-versions DIST1 DIST2
Same as compare-packages/compare-bin-packages, but also runs dpkg --compare-versions and display where the package is newer.
compare-src-bin-packages DIST
Compare sources and binaries for DIST
compare-src-bin-versions DIST
Same as compare-src-bin-packages, but also run dpkg --compare-versions and display where the package is newer
grep-dctrl-packages DIST [...]
Run grep-dctrl on *_Packages inside DIST
grep-dctrl-sources DIST [...]
Run grep-dctrl on *_Sources inside DIST
list
List available DISTs
COPYRIGHT
This program is copyright 2007 by Lucas Nussbaum and Luk Claes. This program comes with ABSOLUTELY NO WARRANTY.
It is licensed under the terms of the GPL, either version 2 of the License, or (at your option) any later version.
Debian Utilities 2013-12-23 CHDIST(1)
06-29-2011
I already tried playing with the quotation, but nothing worked. Hope somebody can help me. I'd also appreciate hints or tips if theres a more convenient way of doing what i want to do 