> Le 20/12/2025 à 16:31, Peter via Dng a écrit :
>> From:    Didier Kryn<kryn@???>
>> Date:    Thu, 18 Dec 2025 11:17:07 +0100
>>> lsblk -o NAME,UUID
>> Then check for a specific device.
>> if (lsblk -o UUID | grep "40d81969-8f9d-4964-b214-87bcf273192a" | wc -c)=37 ; then
>>    echo device present
>> else
>>    echo device not present
>> fi
>>
>> The if condition has 3 commands, lsblk, grep and wc.  I'm working on
>> something more direct.
>>
>> The findmnt manual has this under EXIT STATUS.
>> The exit value is 0 if there is something to display, or 1 on any
>> error (for example if no filesystem is found based on the user's
>> filter specification, or the device path or mountpoint does not
>> exist).
>>
>> if [ findmnt -nrS UUID=$workingVolume ]; then
>>    echo "$workingVolume is not mounted"
>> else
>>    echo "$workingVolume is mounted"
>> fi
>>
>> The if condition has a syntax error.  Can someone suggest a fix?
>>
>> From:    Didier Kryn<kryn@???>
>> Date:    Thu, 18 Dec 2025 11:57:31 +0100
>>> ... RTFM (~:
>> I'm aware of manuals and the old RTFM cliche.  The implicit types in
>> bash tend to confuse me.  In this instance, I don't know which manual
>> might help.
>
> lsblk -alno UUID | grep -c "40d81969-8f9d-4964-b214-87bcf273192a"
>
> is only two commands.
>
> Alternatively:
>
> if lsblk -alno UUID | grep -q "40d81969-8f9d-4964-b214-87bcf273192a"; 
> then printf "yes\n"; else echo printf "No\n"; fi;
>
>