Bash array json restic snapshots and jq
As you know bash is not ideal with multi arrays. Frequently I find myself wanting to read something like json into bash and loop over it. There are many ways to do this including readarray etc. I found this to work best for me. Note json can have lists so I collapse those with jq’s join. Example:
# cat restic-loop-snaps.sh
#!/bin/bash
function loopOverArray(){
restic snapshots --json | jq -r '.' | jq -c '.[]'| while read i; do
id=$(echo "$i" | jq -r '.| .short_id')
ctime=$(echo "$i" | jq -r '.| .time')
hostname=$(echo "$i" | jq -r '.| .hostname')
paths=$(echo "$i" | jq -r '. | .paths | join(",")')
tagss=$(echo "$i" | jq -r '. | .tags | join(",")')
printf "%-10s - %-40s - %-20s - %-30s - %-20s\n" $id $ctime $hostname $paths $tags
done
}
loopOverArray
# ./restic-loop-snaps.sh
0a71b5d4 - 2019-05-31T05:03:20.655922639-05:00 - pop-os - /DATA/MyWorkDocs -
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