52 lines
1.1 KiB
Bash
Executable File
52 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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# Author: Bandie <bandie@chaospott.de>
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# Copyright: Bandie, 2019, GNU-GPLv3
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set -e
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## Get params from /etc/default/grub
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OWNER=$(cat /etc/default/grub | egrep "^OWNER=.*$" | sed "s/.*=\(.*\)/\1/;s/\"//g;s/'//g")
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OWNER_TIMEOUT=$(cat /etc/default/grub | egrep "^OWNER_TIMEOUT=.*$" | sed "s/.*=\(.*\)/\1/;s/\"//g;s/'//g")
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## Check if OWNER is set
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if [ -z "$OWNER" ]; then
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echo "/etc/default/grub: No OWNER set." >&2
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exit 0
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fi
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## Notify user about ownership
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echo "Show ==> $OWNER <== as owner" >&2
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## Generate spaces in case if the owner has a very short name
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for ((i=${#OWNER}; i<6; i++)); do
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NSP="$NSP "
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done
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## Generate border around the owner message
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B=" ##########"
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for ((i=6; i<${#OWNER}; i++)); do
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B="${B}#"
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SPACE="$SPACE "
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done
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## Check if OWNER_TIMEOUT is set. If not, default 5
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if ! [[ $OWNER_TIMEOUT =~ ^[0-9]+$ ]]; then
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OWNER_TIMEOUT=5
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echo "/etc/default/grub: No OWNER_TIMEOUT set. Using default: 5 seconds." >&2
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fi
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## Write it into the grub.cfg
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cat << EOF
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echo ""
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echo "$B"
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echo " # Owner: ${SPACE}#"
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echo " # $OWNER $NSP#"
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echo "$B"
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echo ""
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echo ""
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sleep -i $OWNER_TIMEOUT
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EOF
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