mjhjmtu

I took the sample script, below, off the net to check and validate mount points of system that is already up and running.

The problem:
I want to compare existing mounted-mount points which are not commented out in the /etc/fstab and highlighting them if they are on.

Also, I would like to inquire if there is any alternative solution!

#!/bin/bash
while read ip;
do
 echo "connecting to $ip";
 ssh root@$ip "until mount | grep -w "/mnt/data" >/dev/null;
 do echo mounting "/mnt/data"; mount "/mnt/data"; sleep 1; done && 
 echo Mounted on $ip"
done < ips.txt

This appears to do the trick:

#!/bin/bash
mountpoints=( $(awk '$1 !~ /^#/ && $2 ~ /^[/]/ print $2' /etc/fstab) )
for mount in $mountpoints[@]; do
 if ! findmnt "$mount" &> /dev/null; then
 echo "$mount is declared in fstab but not mounted"
 fi
done

Stealing borrowing DopeGhoti's awk, you could use comm for this:

Filesystems that are mounted but not in /etc/fstab:

comm -23 <(mount|awk 'print $3'|sort) <(awk '$1 !~ /^#/ && $2 ~ /^[/]/ print $2' /etc/fstab|sort)

Filesystems that are in /etc/fstab but not mounted:

comm -13 <(mount|awk 'print $3'|sort) <(awk '$1 !~ /^#/ && $2 ~ /^[/]/ print $2' /etc/fstab|sort)