From: Duncan Roe <duncan_roe@optusnet.com.au>
To: cygwin@cygwin.com
Subject: Re: alias appears to not work inside a called bash scripty
Date: Mon, 21 Aug 2017 22:55:00 -0000 [thread overview]
Message-ID: <20170821225531.GB3317@dimstar.local.net> (raw)
In-Reply-To: <000001d31acd$108b0340$31a109c0$@rogers.com>
On Mon, Aug 21, 2017 at 06:30:15PM -0400, Michel LaBarre wrote:
> Hello all,
>
> I have a 4 line bash script:
> #!/bin/bash
> alias nawk=gawk
> alias nawk
> nawk 'BEGIN {FS="^"} ; (length($0) > maxline) { maxline = length($0) ;
> line=$0} ; END{print maxline, line}' $*
>
>
> When I run the script I see:
> alias nawk='gawk'
> /cygdrive/c/mybin/maxline/: line 4: nawk: command not found
>
> It looks like the alias is properly defined but it does not appear to take
> effect.
>
> Same thing happens if I alias to awk instead of qawk.
>
> Same thing happens if I define the alias in .bashrc (I include an echo in
> bashrc to confirm that it is being invoked).
>
> My .bashrc is not likely a factor - I empty it and the result is the same.
> No carriage returns in the script or .bashrc.
>
> I have updated everything August 5th using setup and letting all "Pending"
> pkgs update so I believe I am up to date.
>
> The funny thing is that it works ok from an interactive session, whether the
> alias is explicitly defined in the session or in .bashrc.
>
> Thank you in advance for any insights.
>
> BTW - I just re-subscribed to cygwin 4-5 hours ago and have not seen any
> mail which seems unusual based on past experience.
>
> Michel LaBarre
> 613-692-0507
>
>
This is expected behaviour. "man bash" gibes
" Aliases are not expanded when the shell is not interactive, unless the
expand_aliases shell option is set using shopt (see the description of shopt
under SHELL BUILTIN COMMANDS below).
Cheers ... Duncan.
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next prev parent reply other threads:[~2017-08-21 22:55 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-21 22:30 alias appears to not work inside a called bash script Michel LaBarre
2017-08-21 22:53 ` Eliot Moss
2017-08-21 22:55 ` Duncan Roe [this message]
2017-08-22 1:01 ` alias appears to not work inside a called bash scripty Michel LaBarre
2017-08-22 14:31 ` alias appears to not work inside a called bash script Stephen John Smoogen
2017-08-22 14:47 ` Eliot Moss
2017-08-22 15:19 ` Stephen John Smoogen
2017-08-22 16:46 ` Eliot Moss
2017-08-22 18:25 ` Stephen John Smoogen
2017-08-25 0:37 ` Either trim quoted text or STOP BOTTOM POSTING (was: alias appears to not work...) L A Walsh
2017-08-25 14:25 ` Either trim quoted text or STOP BOTTOM POSTING cyg Simple
2017-08-25 16:43 ` Dan Kegel
2017-08-26 6:04 ` convenient trimming of quoted text to make points L A Walsh
2017-08-26 15:26 ` cyg Simple
2017-09-01 4:54 ` Duncan Roe
2017-09-01 7:37 ` Csaba Raduly
2017-09-01 12:38 ` cyg Simple
2017-08-22 17:08 ` alias appears to not work inside a called bash script cyg Simple
2017-08-22 17:14 ` Eliot Moss
2017-08-22 19:07 ` cyg Simple
2017-08-22 19:11 ` cyg Simple
2017-08-23 19:08 ` Eric Blake
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