I need help with the cut command.

Expand Post »

Hi everyone,

In part of my script, I'm trying cut out couple of columns from the df -h command.

The ones I want is the Filesystem column and the Mounted On column. This is what I have so far.

Shell Scripting Syntax (Toggle Plain Text)
df -h | cut -d " " -f1
df -h | cut -d " " -f1

And that will get the Filesystem in the first field, but for the next column, I tried different fields and I still keep getting a blank space.

Any help you guys can give will be greatly appreciated!
Thanks!

Similar Threads

how to create a submenu in python? in Python
Compare 2 tables in Perl
using grep, sed, awk to pull links out of an XML file in Shell Scripting
Date comparing in Unix shell script in Shell Scripting
reverse with cut command in Shell Scripting

Impact4ever

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

14 posts
since Jan 2008

Permalink

Nov 2nd, 2009

Try using sed

Click to Expand / Collapse Quote originally posted by Impact4ever ...

Hi everyone,

In part of my script, I'm trying cut out couple of columns from the df -h command.

The ones I want is the Filesystem column and the Mounted On column. This is what I have so far.
Shell Scripting Syntax (Toggle Plain Text)
df -h | cut -d " " -f1
df -h | cut -d " " -f1
And that will get the Filesystem in the first field, but for the next column, I tried different fields and I still keep getting a blank space.

Any help you guys can give will be greatly appreciated!
Thanks!

Well, a quick and dirty way would be to interpose a sed command which would reduce multiple spaces to just one. Then the "Mounted On" column would reliably be field 5 (assuming your df outputs in the same format as mine):

Shell Scripting Syntax (Toggle Plain Text)
df -h | sed -e 's/[ ][ ]*/ /g' | cut -d" " -f1,5
df -h | sed -e 's/[ ][ ]*/ /g' | cut -d" " -f1,5

baslow

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

2 posts
since Oct 2009

Permalink

Nov 2nd, 2009

Re: I need help with the cut command.

You could also use awk:

Shell Scripting Syntax (Toggle Plain Text)
sk@svn:~/devex$ df -h | awk '{ print $1,$2,$5 }'
sk@svn:~/devex$ df -h | awk '{ print $1,$2,$5 }'

sknake

Featured Poster

Reputation Points: 1749

Solved Threads: 735

Senior Poster

Offline

3,948 posts
since Feb 2009

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in Shell Scripting Forum Timeline: Counter

Next Thread in Shell Scripting Forum Timeline: Uix Script Help Need

DaniWeb Message

Cancel Changes

User Name
Password