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55 lines
2 KiB
Text
55 lines
2 KiB
Text
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#!/bin/bash
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# Copyright 2024 Patrick J. Volkerding, Sebeka, Minnesota, USA
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# All rights reserved.
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#
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# Redistribution and use of this script, with or without modification, is
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# permitted provided that the following conditions are met:
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#
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# 1. Redistributions of this script must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# This script removes initrds in the /boot directory if there's no kernel
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# in /boot with the same version. This keeps unused initrds from accumulating
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# and filling up the filesystem.
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# Usage: Run without any options to clean up initrd orphans:
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#
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# ./remove-orphaned-initrds
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#
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# To see what would be removed without actually removing anything:
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#
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# ./remove-orphaned-initrds --dry-run
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#
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# This script is suitable to run as a periodic cron job (perhaps weekly).
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ORPHANS_FOUND=false
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cd /boot
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for initrd in initrd-*-*.img ; do
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INITRD_VERSION="$(echo $initrd | cut -f 2 -d -)"
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if ! /bin/ls vmlinuz-* | grep -q -- "-${INITRD_VERSION}-" ; then
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ORPHANS_FOUND=true
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if [ "$1" = "--dry-run" ]; then
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echo "Would remove: $initrd"
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else
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echo "Removing: $initrd"
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rm -f $initrd
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fi
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fi
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done
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if [ "$ORPHANS_FOUND" = "false" ]; then
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echo "No orphaned initrds found in /boot."
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fi
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