Basic shell script

On 13 May 2007 04:15:42 -0700, kimi
wrote:
>
>
> Hi,
> I'm just learning shell script using Kernighan and Pike's "Unix
> Programming Environment" using the bash shell and an example isn't
> working as it should.
>
> Their modified cal program is:
>
> # calx: Nicer interface to /usr/bin/cal.
>
> case $# in
> 0) set 'date'; m=$2; y=$6 ;; # No args : use today.
set `date`; # if you don't see a difference, use another font



--
Those who don't know, talk. Those who don't talk, know.

On May 13, 8:19 am, Bill Marcum wrote:
> On 13 May 2007 04:15:42 -0700, kimi wrote:
>
> > Hi,
> > I'm just learning shell script using Kernighan and Pike's "Unix
> > Programming Environment" using the bash shell and an example isn't
> > working as it should.
>
> > Their modified cal program is:
>
> > # calx: Nicer interface to /usr/bin/cal.
>
> > case $# in
> > 0) set 'date'; m=$2; y=$6 ;; # No args : use today.
>
> set `date`; # if you don't see a difference, use another font
>
> --
> Those who don't know, talk. Those who don't talk, know.

Same results, not sure what font has to do with the program, please
explain.

kimi wrote:
> On May 13, 8:19 am, Bill Marcum wrote:
>
>>On 13 May 2007 04:15:42 -0700, kimi wrote:
>>
>>
>>>Hi,
>>>I'm just learning shell script using Kernighan and Pike's "Unix
>>>Programming Environment" using the bash shell and an example isn't
>>>working as it should.
>>
>>>Their modified cal program is:
>>
>>># calx: Nicer interface to /usr/bin/cal.
>>
>>>case $# in
>>>0) set 'date'; m=$2; y=$6 ;; # No args : use today.
>>
>> set `date`; # if you don't see a difference, use another font
>>
>>--
>>Those who don't know, talk. Those who don't talk, know.
>
>
> Same results, not sure what font has to do with the program, please
> explain.
>

The quotes around "date" are different and have different semantics.

$ set 'date'
$ echo $*
date

$ set `date`
$ echo $*
Mon May 14 01:12:38 CEST 2007


Janis

On 13 May 2007 15:52:43 -0700, kimi
wrote:
>
>
> On May 13, 8:19 am, Bill Marcum wrote:
>> On 13 May 2007 04:15:42 -0700, kimi wrote:
>>
>> > Hi,
>> > I'm just learning shell script using Kernighan and Pike's "Unix
>> > Programming Environment" using the bash shell and an example isn't
>> > working as it should.
>>
>> > Their modified cal program is:
>>
>> > # calx: Nicer interface to /usr/bin/cal.
>>
>> > case $# in
>> > 0) set 'date'; m=$2; y=$6 ;; # No args : use today.
>>
>> set `date`; # if you don't see a difference, use another font
>>
>> --
>> Those who don't know, talk. Those who don't talk, know.
>
> Same results, not sure what font has to do with the program, please
> explain.
>
I was just saying you might be using a font where '' and `` look the
same.

set `date`; m=$2; y=$6; echo $m $y

--
jogger, n.:
An odd sort of person with a thing for pain.

The carbonbased lifeform kimi inspired comp.unix.shell with:
> On May 13, 8:19 am, Bill Marcum wrote:
>> On 13 May 2007 04:15:42 -0700, kimi wrote:
>>
>> > Hi,
>> > I'm just learning shell script using Kernighan and Pike's "Unix
>> > Programming Environment" using the bash shell and an example isn't
>> > working as it should.
>>
>> > Their modified cal program is:
>>
>> > # calx: Nicer interface to /usr/bin/cal.
>>
>> > case $# in
>> > 0) set 'date'; m=$2; y=$6 ;; # No args : use today.
>>
>> set `date`; # if you don't see a difference, use another font
>>
>> --
>> Those who don't know, talk. Those who don't talk, know.
>
> Same results, not sure what font has to do with the program, please
> explain.

Use $(), not backtics

Theo
--
theo at van-werkhoven.nl ICQ:277217131 SuSE Linux
linuxcounter.org: 99872 Jabber:muadib at jabber.xs4all.nl AMD XP3000+ 1024MB
"ik _heb_ niets tegen Microsoft, ik heb iets tegen
de uitwassen *van* Microsoft"

On May 14, 4:43 pm, "Theo v. Werkhoven" werkhoven.nl.invalid> wrote:
> The carbonbased lifeform kimi inspired comp.unix.shell with:
>
>
>
> > On May 13, 8:19 am, Bill Marcum wrote:
> >> On 13 May 2007 04:15:42 -0700, kimi wrote:
>
> >> > Hi,
> >> > I'm just learning shell script using Kernighan and Pike's "Unix
> >> > Programming Environment" using the bash shell and an example isn't
> >> > working as it should.
>
> >> > Their modified cal program is:
>
> >> > # calx: Nicer interface to /usr/bin/cal.
>
> >> > case $# in
> >> > 0) set 'date'; m=$2; y=$6 ;; # No args : use today.
>
> >> set `date`; # if you don't see a difference, use another font
>
> >> --
> >> Those who don't know, talk. Those who don't talk, know.
>
> > Same results, not sure what font has to do with the program, please
> > explain.
>
> Use $(), not backtics
>
> Theo
> --
> theo at van-werkhoven.nl ICQ:277217131 SuSE Linux
> linuxcounter.org: 99872 Jabber:muadib at jabber.xs4all.nl AMD XP3000+ 1024MB
> "ik _heb_ niets tegen Microsoft, ik heb iets tegen
> de uitwassen *van* Microsoft"

This worked, thanks for the information. The backtics are showing up
incorrectly in this posting for some reason. If I copy and paste out
of the terminal application to a text file, they are backtics; if
posted to this site, they're not backtics.

Thanks for the assistance...