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Full Discussion: possible sed usage
Top Forums Shell Programming and Scripting possible sed usage Post 302240977 by madpenguin on Saturday 27th of September 2008 11:55:27 AM
Old 09-27-2008
Thanks for the reply but it's not quite what I need.

Code:
root@darkstar:~# ls /var/log/packages/glib2-2.18.1-i486-1gnome224jag 
/var/log/packages/glib2-2.18.1-i486-1gnome224jag
root@darkstar:~# installed=$(ls /var/log/packages/glib2-[[:digit:].]* | sed 's/\(-[^-]*-[0-9]\)\(.*\)/\1/g')
root@darkstar:~# echo $installed
/var/log/packages/glib2-2.18.1-i486-1   # installed != 1

root@darkstar:~# ls /var/log/packages/mozilla-firefox-3.0.2-native-1gnome224jag 
/var/log/packages/mozilla-firefox-3.0.2-native-1gnome224jag
root@darkstar:~# installed=$(ls /var/log/packages/mozilla-firefox-[[:digit:].]* | sed 's/\(-[^-]*-[0-9]\)\(.*\)/\1/g')
root@darkstar:~# echo $installed
/var/log/packages/mozilla-firefox-3  # installed != 1

As you can see (I forgot to mention), $NAME can also contain a hyphen sometimes so counting them out in the sed doesn't work half the time. $VERSION should always contain digits but may also contain letters. $ARCH could have either numbers and/or letters (native or i486). And $BUILD can also have both.

If I'm working with a package name like "xpaint-2.7.8.1-i486-2", then my old sed works fine.
Code:
root@darkstar:~# installed=$(ls /var/log/packages/xpaint-[[:digit:].]* | sed 's/^.*\(.\)$/\1/')
root@darkstar:~# echo $installed
2  # installed = 2

Thanks again. Much appreciated.
 

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LEARN ABOUT SUSE

xmlstarlet

XMLSTARLET(1)							 xmlstarlet Manual						     XMLSTARLET(1)

NAME

       xmlstarlet - command line XML/XSLT toolkit

SYNOPSIS

       xmlstarlet [<options>] [<command>] [<cmd-options>]

INTRODUCTION

       XMLStarlet is a set of command line utilities (tools) which can be used to transform, query, validate, and edit XML documents and files us-
       ing simple set of shell commands in similar way it is done for plain text files using UNIX grep, sed, awk, diff, patch, join, etc commands.
       This  set of command line utilities can be used by those who deal with many XML documents on UNIX shell command prompt as well as for auto-
       mated XML processing with shell scripts.

OPTIONS

       --version
	      Display the version of xmlstarlet.

       --help Display help.

COMMANDS

       Type: xml <command> --help <ENTER> for command help

       Available commands include:

       ed (or edit)
	      Edit/update XML document(s).

       sel (or select)
	      Select data or query XML document(s) (XPATH, etc).

       tr (or transform)
	      Transform XML documents(s) using XSLT.

       val (or validate)
	      Validate XML document(s) (well-formed/DTD/XSD/RelaxNG).

       fo (or format)
	      Format XML document(s).

       el (or elements)
	      Display element structure of XML document.

       c14n (or canonic)
	      XML canonicalization.

       ls (or list)
	      List directory as XML.

       esc (or escape)
	      Escape special XML characters.

       unesc (or unescape)
	      Unescape special XML characters.

       pyx (or xmln)
	      Convert XML into PYX format (based on ESIS - ISO 8879).

       p2x (or depyx)
	      Convert PYX into XML.

REFERENCES

       XMLStarlet is a command line  toolkit  to  query/edit/check/transform  XML  documents  (for  more  information  see  http://xmlstar.source-
       forge.net/).

AUTHOR

       Mikhail Grushinskiy.

																     XMLSTARLET(1)
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