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Full Discussion: Bash shell script: Str(007) to int(7),increment it(8) & convert back to string(008)
Top Forums Shell Programming and Scripting Bash shell script: Str(007) to int(7),increment it(8) & convert back to string(008) Post 302578340 by drwatson_droid on Thursday 1st of December 2011 10:26:11 AM
Old 12-01-2011
Bug Bash shell script: Str(007) to int(7),increment it(8) & convert back to string(008)
Hi,
I have the following requirement.

There will be following text/line in a file (eg: search-build.txt)
PRODUCT_VERSION="V:01.002.007.Build1234"

I need to update the incremental build number (eg here 007) every time I give a build through script. I am able to search the string and get the item.
Quote:
rexpression_sed='PRODUCT_VERSION=\"V:\([0-9]*\).\([0-9]*\).\([0-9]*\).Build\([0-9]*\)\"'
var2=`grep -sn $rexpression_sed search-build.txt | sed -e 's/'$rexpression_sed'/\1\t\2\t\3\t\4/g'| cut -f 3`
echo $var2
Output
007

How to convert this to integer (7), add 1 to it (8) and again get back in the same form (008) in the easiest way? I will be using sed -i on the file, with this new string that can be used with RE for replacing that part!
Or
Is there any better method than above.

Thanks for any help.
 

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LEARN ABOUT MINIX

mk-build-deps

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,
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Debian Utilities						    2013-12-23							  MK-BUILD-DEPS(1)
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