[nylug-talk] need sed help

[Peter C. Norton]

The preceeding 1 of the pattern indicates that it should only happen
on the first line.

The ^ is at the beginning of the line.

The [ \t] groups the space and the tab.

The * is one or more ofr the preceeding character or group.

-Peter

On Tue, Apr 03, 2007 at 12:28:54PM -0400, jh wrote:
> Works like a charm. Thanks. Can you explain the syntax to me? Would very 
> much appreciate it.
> 
> jh
> 
> Peter C. Norton wrote:
> > Does this not work for you?
> > 
> > gnu sed '1s/^[ \t]*//'
> > 
> > -Peter
> > 
> > On Tue, Apr 03, 2007 at 12:09:42PM -0400, jh wrote:
> >> I'm trying to use sed to delete all the whitespace, up to the first 
> >> non-white character, on the first line of a file, and I can't make it 
> >> work. Can someone show me what will work?
> >>
> >> Tried this:
> >>
> >> sed -e 's/[\t]//1' problem.txt > out.txt
> >> sed -e 's/[\020]*//1' problem.txt > out.txt
> >> sed -e 's/[:space:]*//1' problem.txt > out.txt
> >>
> >> No dice. This is on an MS-DOS formatted text file...
> >>
> >> Thanks~
> >>
> >> jh
> >>
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> 
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