Linux cksum Command
Posted on February 5, 2021 (Last modified on July 14, 2022) • 2 min read • 325 wordsIn this tutorial we learn how to use cksum command in Linux. cksum command will print the checksum and byte size of a file.
In this tutorial we learn how to use cksum command in Linux. cksum command is a Linux command which do checksum and count the bytes in a file
cksum [FILE]...
cksum [OPTION]To use cksum we only need to pass the filename to the command. For our exercise let’s create a new file using echo command below
echo "Hello Howtodojo!" > helloNow let’s check the checksum of the new file named hello that we just create
cksum hello
3769020071 17 helloThe first column of the output above is the checksum, The second column is the byte size. Since the text we enter on the hello file consists of 17 characters so it’s 17 bytes in size. The last one is the file name.
We can use man and info command to see the manual page of cksum command.
cksum command also have
--help option to show list of options.
man page of cksum command can be opened using command below. To exit man or info page you can press q.
man cksuminfo page of cksum command can be opened using the command below.
info cksumhelp page of cksum command can be printed using the command below.
cksum --helpYou can find cksum command source code from the folowing repositories:
You can read tutorials of related Linux commands below:
In this tutorial we learn how to use cksum in Linux with practical examples. Visit our
Linux Commands guide to learn more about using command line interface in Linux.