Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Manuale Utente Scaricare il pdf (Pagina 6)

actually stored this as a script named 'usage' since I use it often.

Example :

I have my Linux installed on /dev/hda1 and I have mounted my

Windows partitions as well (by default every time Linux boots). So 'df' by

default shows me the disk usage of my Linux as well as Windows

partitions. And I am only interested in the disk usage of the Linux

partitions. This is what I use :

$ df -h | grep /dev/hda1 | cut -c 41-43

This command displays the following on my machine

45%

Basically this command makes 'df' display the disk usages of all the

partitions and then extracts the lines with /dev/hda1 since I am only

interested in that. Then it cuts the characters from the 41st to the 43rd

column since they are the columns that display the usage in % , which is

what I want.

Note : In case you are not familiar with pipes (which is used in the

above command) then refer to Article No. 24

. 'cut' is another tool

available in Unix. The above usage of cut gets the the characters that

are present in the specified columns. If you are interested in knowing

how to mount you Windows partitions under Linux, please refer to Article

No. 3 .

There are a few more options that can be used with 'du' and 'df' . You

could find them in the man pages.

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Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Manuale Utente Pagina 6