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Top Forums Shell Programming and Scripting grep - Extracting multiple key words from stdout Post 302636625 by jcdole on Monday 7th of May 2012 05:57:19 PM
Old 05-07-2012
grep - Extracting multiple key words from stdout

Hello.

From command line, the command zypper info nxclient
return a bloc of data :

Code:
linux local # zypper info nxclient
Loading repository data...
Reading installed packages...


Information for package nxclient:

Repository: zypper_local
Name: nxclient
Version: 3.5.0-7
Arch: x86_64
Vendor: NoMachine
Installed: No
Status: not installed
Installed Size: 10.3 MiB
Summary: NX Client
Description: 
NoMachine NX is a fast and scalable terminal server system based on the
X11 protocol. NX lets you work fluently even across slow links like modems
and provides a full set of administration tools that make it a complete
desktop virtualization solution for your organization.

This package contains the graphical front-end used to access X, RDP and RFB
sessions on a remote NX Server. It also includes NX X compression libraries
and utilities needed by both NX Client and Server.

Baseline:

nx-X11: 3.5.0-1
nxauth: 3.5.0-1
nxwin:  3.5.0-2
nxssh:  3.5.0-2
nxcomp: 3.5.0-2
nxesd:  3.5.0-2
nxkill: 3.5.0-1
nxservice: 3.5.0-2
nxcompsh: 3.5.0-1
nx-X11-compat: 3.5.0-1
linux-srv:/local/install_from_local #

How to code a function which return true if the bloc of data contains some specific values.

something like :

Code:
#!/bin/bash
#

function my_filter() {

if Repository = zypper_local then
if Installed = No then
if Status = not installed then
my_filter = "TRUE"
fi
fi
fi } #MAIN zypper info nxclient > file_temp.text if my_filter(file_temp.txt) = true then
install it
fi # end

I look for a better solution that reading "file_temp.text" 3 times and looking for each parameter :
Code:
result=${ command | grep para1 para2 para3 )
if $result=true then
     install
fi

Moderator's Comments:
Mod Comment Please view this link: How to use [code]...[/code] tags

Last edited by Scrutinizer; 05-08-2012 at 12:59 AM.. Reason: code tags
 

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