Titles
Categories
Documentation

Find knowledge base article(s) by searching for keywords in the title e.g. type linux in the search box below

Find knowledge base article(s) by browsing the subject categories of articles

Technology quick references, cheatsheets, user manuals etc.

Shop Online through ShopifyLite

Tutorials on various IT applications.

How to use blkid command to check whether media is present in a CD-ROM drive

e.g. if disk is present in the drive

# blkid /dev/sr0
/dev/sr0: UUID="2013-05-31-23-04-19-00" LABEL="ARCH_201306" TYPE="iso9660" PTTYPE="dos"

# echo $?
0

=> If media is present, there will be some output showing the media label etc AND the value of $? will be 0

e.g. if disk is not present in the drive

# blkid /dev/sr0
# echo $?
2