Here are some sed commands that do what you want -- in the [] brackets,
there is a space and a tab.
$ cat removeblanks.sed
/^[ ]*$/d
s/^[ ]*//
s/[ ]*$//
Here's a test file.
$ cat test.txt
This is a real line, the lines above are a carriage return, a tab and
spaces.
This line starts and ends with tabs.
This line starts and ends with spaces
This line starts and ends with spaces and tabs
Here's what you run:
$ sed -f removeblanks.sed test.txt
This is a real line, the lines above are a carriage return, a tab and
spaces.
This line starts and ends with tabs.
This line starts and ends with spaces
This line starts and ends with spaces and tabs
HTH!
Diana Duncan
TITAN Technology Partners
One Copley Parkway, Ste 540
Morrisville, NC 27560
VM: 919.466.7337 x 316
F: 919.466.7427
E: [EMAIL PROTECTED]
"Kumar,
Dharminder" To: Multiple recipients of list
ORACLE-L <[EMAIL PROTECTED]>
<Dharminder.Kumar@ cc:
bmonb.com> Fax to:
Sent by: Subject: Help for Unix text file
processing
[EMAIL PROTECTED]
06/06/2001 10:55
AM
Please respond to
ORACLE-L
> Hey all,
>
> I am looking for some commands like ( grep, egrep, sed etc) to do the
> following on a Unix box.
>
> 1. Command to take out all the blank line from a text file. The blank
line
> may include tabs and whitespaces.
> 2. Command to take out the trailing and starting blanks and tabs from the
> each line of the text file.
> 3. Command for the above two tasks combined.
>
> Thanks in advance.
>
> Dharminder Kumar
>
>
>
>
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