How to install new package version (update package) when there is new update available in repo using shell script

Question

I need to write a shell script that upgrade a package by comparing installed and available version. For example git 2.3 is installed in my machine, I need to upgrade to new version (if available) through shell script.

I tried this:

#!/bin/bash
package_name=git
INSTALLED_VERSION= rpm -q $package_name
AVAILABLE_VERSION= yum --showduplicates list $package_name
echo $INSTALLED_VERSION
echo $AVAILABLE_VERSION

if [ $INSTALLED_VERSION -lt $AVAILABLE_VERSION ] ; then
        yum install -y  $package_name
fi

# check version:
git --version

Please try https://shellcheck.net/ before asking for human assistance. You have basic syntax errors; the proper syntax for capturing the output of a command is `variable=$(command --with arguments)` — tripleee, Feb 07 '23 at 08:18

score 0 · Answer 1 · answered Feb 07 '23 at 06:27

0

yum can do it for you, just run

yum update -y "$package_name"

and it will update the package if a new version is available.

answered Feb 07 '23 at 06:27

Diego Torres Milano

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So, no need to compare, yum itself automatically compare both the installed and available version? – Kiran Kumar Feb 07 '23 at 06:31
Indeed, if there is no update then this simply checks that you have the newest version already. – tripleee Feb 07 '23 at 08:17

How to install new package version (update package) when there is new update available in repo using shell script

1 Answers1