This is the mail archive of the
cygwin
mailing list for the Cygwin project.
Re: alias command not effective
On Mon, Jan 17, 2011 at 14:04, Eric Blake wrote:
>
> On 01/17/2011 01:24 AM, Thomas Wiedmann wrote:
> > Hello,
> >
> > After defining an alias, e. g.
> >
> > Âalias laf='ls -la' | grep -v "^d"
>
> That defined an alias in the subshell used to form the pipeline.
> Aliases in child processes do not affect the parent process.
>
And, using my "paranormal powers", I'd say the command line the OP wants is:
alias laf='ls -la | grep -v "^d"'
(note the second quote char was moved to the end)
> > laf
> > bash:: laf: command not found
>
> Because the parent process still doesn't have an alias defined.
>
> >
> > What may be the reason, that the use of an alias, defined, had not been
> > accepted?
> > What has to be done to resolve this problem?
>
> Don't pipe the output of alias into another command, thereby avoiding
> the subshell that would limit the alias to just the child shell.
>
He never wanted to pipe the alias command :)
The real answer is: Double-check the quoting rules, so that pipe char
doesn't get interpreted by bash.
> This is not cygwin-specific.
>
ditto.
___________
Julio Costa
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple