82 lines
2.0 KiB
Bash
Executable File
82 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# name: restic_backup.sh
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# version: 0.1
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# author: david@socialnerds.org
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# license: MIT
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# description: a simple script to automate the restic backup utility.
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# i created this for my personal use, though you are very
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# welcome reuse and improve.
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# **** CONFIG ****
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PASSWORD="/root/.restic-password"
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REPO="sftp:remote-server.tld:/path/to/repository"
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KEEP=30
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BIN="/usr/bin/restic"
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OPTIONS="-q"
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# **** START ****
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CMD="$BIN -p $PASSWORD -r $REPO $OPTIONS"
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#TODO: check for elevated privileges
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# Generate a new password file if it is missing or empty
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if [ ! -s $PASSWORD ]; then
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#echo "error: Password file is empty or does not exist. [$PASSWORD]"
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#exit 1
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tr -cd '[:alnum:]' < /dev/urandom | fold -w32 | head -n1 > $PASSWORD
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chmod 600 $PASSWORD
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echo "warning: New password file generated since it does not exist or is empty. [$PASSWORD]"
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fi
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# Initialize a new repo if the repo url has no config file
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$CMD snapshots >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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$CMD init >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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echo "error: A problem occured while creating a new repository. [$REPO]"
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exit 1
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fi
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echo "warning: New repository initialized. [$REPO]"
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fi
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# Run the restic repository check
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$CMD check > /dev/null
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if [ $? -ne 0 ]; then
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echo "error: Repository check failed. [$REPO]"
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exit 1
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fi
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# First option must be a readable folder/file
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if [ $1 ]; then
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if [ -r $1 ]; then
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LOCAL=$1
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else
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echo "error: The path given does not seem to be readable. [$1]"
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exit 1
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fi
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else
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echo "error: Local path must be given as an option."
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exit 1
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fi
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# Run the actual backup
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$CMD backup ${@:2} $LOCAL > /dev/null
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if [ $? -ne 0 ]; then
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echo "error: Something went wrong while running backup. [$LOCAL]"
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exit 1
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fi
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# Delete old snapshots
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$CMD forget --keep-last $KEEP --path $LOCAL --prune > /dev/null
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if [ $? -ne 0 ]; then
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echo "error: Something went wrong while deleting old snapshots. [$LOCAL]"
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exit 1
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fi
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# **** END ****
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exit 0
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