Shell script to display Read Only (ro) mount point in Linux

monty_0309 · 01-12-2012, 09:24 PM

Hi,

I want a Shell script to display Read Only (ro) mount point in Linux machine.

Some suggesstions.

Regards,
Vaibhav

chrism01 · 01-12-2012, 10:05 PM

What have you got so far?

cbtshare · 01-13-2012, 12:00 AM

Had some free time

Here ya go ,have fun.

Quote:

#!/bin/bash

#Author:Cbtshare aka stainless
#Purpose:Checks if a mount point on your system is in READ-ONLY mode

mount | awk '{print $1 " " $6}' |

while read output;
do

RW=$(echo $output | cut -d "(" -f 2 | sed -n 's/$ro$.*/&/p'| cut -d "," -f 1)

FILESYSTEM=$(echo $output | cut -d " " -f 1)

if [ "$RW" = "ro" ]

then

echo "$FILESYSTEM is READ-ONLY"

else

echo $FILESYSTEM is WRITEABLE
fi

done

Dark_Helmet · 01-13-2012, 12:26 AM

Normally, I don't like trying to shove lots of functionality into a hard-to-read command, but I was interested in the challenge (and I couldn't sleep).

So, this works on my system:

Code:

mount | sed -n 's@.* on \([^ ]\+\) .*\((\|,\)ro\(,\|)\).*@\1@p'

I was inspired to try when I saw cbtshare's script using sed

cbtshare · 01-13-2012, 09:52 AM

Quote:

Originally Posted by Dark_Helmet

Normally, I don't like trying to shove lots of functionality into a hard-to-read command, but I was interested in the challenge (and I couldn't sleep).

So, this works on my system:

Code:

mount | sed -n 's@.* on \([^ ]\+\) .*\((\|,\)ro\(,\|)\).*@\1@p'

I was inspired to try when I saw cbtshare's script using sed

lol

this works great too.I guess your a master on sed,this was my first time using it lol..good job,nice share

David the H. · 01-14-2012, 10:25 AM

Code:

mount | awk '( $NF ~ /[,(]ro[,)]/) { print $3 }'

This assumes that the path names don't contain spaces however, as that would mess up awk's field counting. You'd have to loop through the line to print the fields between "on" and "type" for that.

Code:

mount | awk '{ if ($NF ~ /[,(]nosuid[,)]/) { for (i=1;i<=NF;i++) { if ($i == "on") { x=1; continue }; if ($i == "type") { x=0; break }; if (x == 1) { printf "%s", $i } } printf "\n" } }'

Not very neat as a one-liner though. It reads better as a stand-alone script. Could probably be simplified some too.