Methods to Examine if a Quantity is Mounted in Bash

If you might want to examine if a quantity is mounted in a Bash script, then you are able to do the next.

Methods to Examine Mounted Volumes

First we have to decide the command that may be capable to examine.

This may be achieved with the /proc/mounts path.

Methods to Examine if a Quantity is Mounted in Bash

if grep -qs '/mnt/foo ' /proc/mounts; then
    echo "It is mounted."
else
    echo "It is not mounted."
fi

Methods to Examine if a Quantity is Mounted and Out there

MNT_DIR=/mnt/foo
df_result=$(timeout 10 df "$MNT_DIR")
[[ $df_result =~ $MNT_DIR ]] 
if [ "$BASH_REMATCH" = "$MNT_DIR" ]
then
    echo "It is out there."
else
    echo "It is not out there."
fi

One other means of Checking Quantity Mounts

mount 
    | minimize -f 3 -d ' ' 
    | grep -q /mnt/foo 
  && echo "mounted" || echo "not mounted"