Not able to remove leading spaces

Shell Programming and Scripting
1

Hi Experts,

In a file tht i copied from the web , i am not able to remove the leading white spaces. I tried the below , none of them working . I opened the file through vi to check for the special characters if any , but no such characters found.
Your advice will be greatly appreciated.

sed 's/^\s*//g' file_name.txt

sed 's/^[ \t]*//g' file_name.txt

sed 's/^[ \t]*//'  file_name.txt

sed 's/ //g' file_name.txt
2

if you have Python

#!/usr/bin/env python
for line in open("file"):
  line=line.strip()
  print line
3

With sed:

sed 's/^ *\([^ ]*\)*/\1/' file
4

Thnks ghostdog74 & Franklin.

ghostdog74 : Your solution worked fine

Frankline : Still i am getting same output , lines with leading white spaces

I did n't understand why the sed is not working for the file.

Let me do some more investigation and will reply if somethng goes fine.

5

Probably you have leading spaces and tabs, try this one:

sed 's/^[     ]*\([^     ]*\)*/\1/' file

Within the character classes you have to type a space and a tab. Type <Ctrl-v> <tab> for the tab character.

Regards

6

Yes Franklin ..It's worked fine this time.

Thnk you.

Regards

Sastry