Command to check read only file system on Linux

Command to check read only file system on Linux:

$ cat /proc/mounts | grep ro,
/dev/root / ext3 ro,data=ordered 0 0
/dev/VolGroup00/LogVol06 /tmp ext3 ro,data=ordered 0 0
/dev/VolGroup00/LogVol02 /usr ext3 ro,data=ordered 0 0
/dev/VolGroup00/LogVol03 /usr/local ext3 ro,data=ordered 0 0
/dev/VolGroup00/LogVol07 /home ext3 ro,data=ordered 0 0
/dev/VolGroup00/LogVol05 /opt ext3 ro,data=ordered 0 0
/dev/sapwebvg/usrsapP35lv /usr/sap/P35 ext3 ro,data=ordered 0 0
$

$ cat /proc/mounts | grep ro,
/dev/loop1 /RHEL6.6_64 iso9660 ro,relatime 0 0
/dev/loop2 /RHEL7.1_64 iso9660 ro,relatime 0 0

$

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