Thread: help with a script

i need implement in larger script of mine, bash code check if packages installed, if yes, something, if not else.
can give me example code of how should it?

you can use dpkg(1) test installed packages:

code:

#!/bin/sh pkglist="dpkg foobar" pkg in $pkglist     dpkg -l $pkg >/dev/null 2>/dev/null     if [ $? -eq 0 ];         echo "package $pkg installed"     else         echo "package $pkg not installed"     fi done

code:

$ ./pkgtest.sh  package dpkg installed package foobar not installed

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