little_shell_scripts/show_rh_updates at master · tpo/little_shell_scripts · GitHub

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#!/bin/bash
#
# based on drag's script - see http://arstechnica.com/civis/viewtopic.php?t=1081335
#

help() {
   echo 'usage: show_rh_updates [--help]'
   echo
   echo '    shows current and new version of packages that would get'
   echo '    updated.'
   echo
   exit 1
}

[ "$1" == "--help" ] && help

print() {
  printf "%40s %40s %40s\n" "$1" "$2" "$3"
}

print "package name" "current version" "update version"
print "------------" "---------------" "--------------"

yum -q check-update | while read i
do
    i=$(echo $i) #this strips off yum's irritating use of whitespace
    if [ "${i}x" != "x" ]
    then
        UVERSION=${i#*\ }
        UVERSION=${UVERSION%\ *}
        PNAME=${i%%\ *}
        PNAME=${PNAME%.*}
        VERSION=$(rpm -q "${PNAME}" --qf '%{VERSION}')
        if [ "$?" != "0" ]; then
          continue
        fi
        print "$PNAME" "$VERSION" "$UVERSION"
    fi
done