i have to do this script

./myscript.sh /a/dir1/vol/vol0

i need to create a script then run it while typing the directory of mounted volume in the same line. then it should show only the percent of usage

closed as unclear what you're asking by Raphael Ahrens, Archemar, countermode, techraf, heemayl Oct 16 '16 at 9:54

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  • as you can see, there is the script and then I have to type a directory of mounted volume. then the output will be just percent what i did was df -h | grep vol0 | awk '{print $5}' 16% but the problem is I can't turn it to script then provide the directory of mounted volume. sorry i am really a beginner. – kukiaz Oct 16 '16 at 9:34
  • No worries. So, your problem is that you don't know how to pass a parameter from the command line to the script? – maulinglawns Oct 16 '16 at 9:43
  • Thank you for understanding, Yes, and actually I am really confused if it is really possible to execute the script like Line 1: ./myscript.sh /a/dir1/vol/vol0 Lilne 2: 4% line 1 will run myscript.sh and will use /a/dir1/vol/vol0 as input ( input can be changed depending on target volume) line 2 will just show the current use% – kukiaz Oct 16 '16 at 9:49

If I understand correctly, you want to pass an argument (the mounted volume) to your script. Here is a very simple example (dfScript.sh) of how I would do that:


# Get the volume from command line

df -h "$volume" | egrep -o '[0-9]+%'

exit 0

Calling this would look something like:

./dfScript.sh /home/

$1 is the first argument passed to the script, in this case I used my /home directory as an example, but you can of course provide the path to any volume.

Also, you don't really need to assign $1 to a variable to use it, I just did so above for clarity.

You can read more on passing arguments to bash here.

  • woah! exactly how it should be. I will remember this and play with it to familiarize it. Really thank you for your help! – kukiaz Oct 16 '16 at 10:07
  • No problem. Read the link I provided, it will tell you a lot about passing arguments to Bash and how it works (and doesn't work!). – maulinglawns Oct 16 '16 at 10:10
  • I will, thank you for the reference as well. It will really be helpful. – kukiaz Oct 16 '16 at 10:12

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