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* RE:  "if" "then" "elif" "fi" "done"
@ 2001-09-05 23:36 Fritz, Wolfgang
  2001-09-06  2:25 ` AW: " Ralf Habacker
  2001-09-06  5:46 ` Wayne Willcox
  0 siblings, 2 replies; 6+ messages in thread
From: Fritz, Wolfgang @ 2001-09-05 23:36 UTC (permalink / raw)
  To: cygwin

> -----Original Message-----
> From: Harter, Pete [ mailto:Pete.Harter@itt.com ]
> Sent: Thursday, September 06, 2001 8:02 AM
> To: 'cygwin@cygwin.com'
> Subject: "if" "then" "elif" "fi" "done"
> 
> 
> Dear Cygwin:
> 
> I'm using Cygwin on NT, writing a bash script to catenate 241 files
> together.  I can't seem to get the  "elif" "fi" "done" 
> statements to work.
> Using "then" seem to have no effect.
> 
> In particular, "elif","fi","done" all cause syntax errors.  
> I've done a "man
> bash", which tells me that the "fi", "elif", "done", etc. 
> ought to work.  I
> can't find much on the www.cygwin.com about syntax.

That's because this is not a cygwin specific problem. Try to find a
standard book about shell programming. 

The "if" problem:
"if, elif" needs a "then"

if condition ; then
   do_something
elif other_condition ; then
   do_other_things
fi

You may place "then" on a seperate line:
if condition
then
  do_something
fi

A special trap with "["

if [ $i -gt 5 ] ; then
#   ^ this blank is a must

reason: "[" is an alias name for the command "test", the above really
means:

if test $i -gt 5 ; then
...
fi

do a "man test" to find the differences between "-gt" and ">" etc.

Wolfgang (hoping the M$ outlook does not mangle the formatting too
much...)

> 
> Here's my commands: 
> 
> #!/bin/bash -x
> pdt="/cygdrive/e/temps"
> pcase="case2"
> #
> cat $pdt/$pcase/$pcase'001'.bdf > $pdt/$pcase.temp
> pi=2
> while [$pi < 241]
> do
>   if [$pi < 10] 
>     cat $pdt/$pcase/$pcase'00'$pi.bdf >> $pdt/$pcase.temp
>   elif 
>     if [$pi < 100] 
>       cat $pdt/$pcase/$pcase'0'$pi.bdf >> $pdt/$pcase.temp
>     elif [$pi >= 100] 
>       cat $pdt/$pcase/$pcase$pi.bdf >> $pdt/$pcase.temp
>     fi
>   fi
>   echo $pi
>   pi=$pi+1
> done
> 
> I revised the commands (by trial & error) to the following, 
> which gives no
> syntax error except that it says "unexpected end of file" 
> after the last
> line:
> 
> #!/bin/bash -x
> pdt="/cygdrive/e/temps"
> pcase="case2"
> #
> cat $pdt/$pcase/$pcase'001'.bdf > $pdt/$pcase.temp
> pi=2
> while [$pi < 241]
> do
>   if [$pi < 10] 
>     cat $pdt/$pcase/$pcase'00'$pi.bdf >> $pdt/$pcase.temp
>   ei 
>     if [$pi < 100] 
>       cat $pdt/$pcase/$pcase'0'$pi.bdf >> $pdt/$pcase.temp
>     ei [$pi >= 100] 
>       cat $pdt/$pcase/$pcase$pi.bdf >> $pdt/$pcase.temp
>     endif
>   endif
>   echo $pi
>   pi=$pi+1
> enddo
> 
> Please help.  Thanks
> 
> Pete Harter
> ITT A/CD Mechanical Analysis
> 219-451-6865
> < mailto:pete.harter@itt.com >
> 
> 
> --
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> 
> 

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^ permalink raw reply	[flat|nested] 6+ messages in thread
* RE: "if" "then" "elif" "fi" "done"
@ 2001-09-06 10:55 Heribert Dahms
  0 siblings, 0 replies; 6+ messages in thread
From: Heribert Dahms @ 2001-09-06 10:55 UTC (permalink / raw)
  To: 'Harter, Pete', 'cygwin@cygwin.com'

Hi Pete,

I'd use something like (untested):

	cat $pdt/$pcase/$pcase`print %03d $pi`.bdf >> $pdt/$pcase.temp


Bye, Heribert (heribert_dahms@icon-gmbh.de)

> -----Original Message-----
> From:	Harter, Pete [SMTP:Pete.Harter@itt.com]
> Sent:	Thursday, September 06, 2001 08:02
> To:	'cygwin@cygwin.com'
> Subject:	"if" "then" "elif" "fi" "done"
> 
> Dear Cygwin:
> 
> I'm using Cygwin on NT, writing a bash script to catenate 241 files
> together.  I can't seem to get the  "elif" "fi" "done" statements to work.
> Using "then" seem to have no effect.
> 
> In particular, "elif","fi","done" all cause syntax errors.  I've done a
> "man
> bash", which tells me that the "fi", "elif", "done", etc. ought to work.
> I
> can't find much on the www.cygwin.com about syntax.
> 
> Here's my commands: 
> 
> #!/bin/bash -x
> pdt="/cygdrive/e/temps"
> pcase="case2"
> #
> cat $pdt/$pcase/$pcase'001'.bdf > $pdt/$pcase.temp
> pi=2
> while [$pi < 241]
> do
>   if [$pi < 10] 
>     cat $pdt/$pcase/$pcase'00'$pi.bdf >> $pdt/$pcase.temp
>   elif 
>     if [$pi < 100] 
>       cat $pdt/$pcase/$pcase'0'$pi.bdf >> $pdt/$pcase.temp
>     elif [$pi >= 100] 
>       cat $pdt/$pcase/$pcase$pi.bdf >> $pdt/$pcase.temp
>     fi
>   fi
>   echo $pi
>   pi=$pi+1
> done
> 
> I revised the commands (by trial & error) to the following, which gives no
> syntax error except that it says "unexpected end of file" after the last
> line:
> 
> #!/bin/bash -x
> pdt="/cygdrive/e/temps"
> pcase="case2"
> #
> cat $pdt/$pcase/$pcase'001'.bdf > $pdt/$pcase.temp
> pi=2
> while [$pi < 241]
> do
>   if [$pi < 10] 
>     cat $pdt/$pcase/$pcase'00'$pi.bdf >> $pdt/$pcase.temp
>   ei 
>     if [$pi < 100] 
>       cat $pdt/$pcase/$pcase'0'$pi.bdf >> $pdt/$pcase.temp
>     ei [$pi >= 100] 
>       cat $pdt/$pcase/$pcase$pi.bdf >> $pdt/$pcase.temp
>     endif
>   endif
>   echo $pi
>   pi=$pi+1
> enddo
> 
> Please help.  Thanks
> 
> Pete Harter
> ITT A/CD Mechanical Analysis
> 219-451-6865
> < mailto:pete.harter@itt.com >
> 
> 
> --
> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> Bug reporting:         http://cygwin.com/bugs.html
> Documentation:         http://cygwin.com/docs.html
> FAQ:                   http://cygwin.com/faq/

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^ permalink raw reply	[flat|nested] 6+ messages in thread
* "if" "then" "elif" "fi" "done"
@ 2001-09-05 23:01 Harter, Pete
  0 siblings, 0 replies; 6+ messages in thread
From: Harter, Pete @ 2001-09-05 23:01 UTC (permalink / raw)
  To: 'cygwin@cygwin.com'

Dear Cygwin:

I'm using Cygwin on NT, writing a bash script to catenate 241 files
together.  I can't seem to get the  "elif" "fi" "done" statements to work.
Using "then" seem to have no effect.

In particular, "elif","fi","done" all cause syntax errors.  I've done a "man
bash", which tells me that the "fi", "elif", "done", etc. ought to work.  I
can't find much on the www.cygwin.com about syntax.

Here's my commands: 

#!/bin/bash -x
pdt="/cygdrive/e/temps"
pcase="case2"
#
cat $pdt/$pcase/$pcase'001'.bdf > $pdt/$pcase.temp
pi=2
while [$pi < 241]
do
  if [$pi < 10] 
    cat $pdt/$pcase/$pcase'00'$pi.bdf >> $pdt/$pcase.temp
  elif 
    if [$pi < 100] 
      cat $pdt/$pcase/$pcase'0'$pi.bdf >> $pdt/$pcase.temp
    elif [$pi >= 100] 
      cat $pdt/$pcase/$pcase$pi.bdf >> $pdt/$pcase.temp
    fi
  fi
  echo $pi
  pi=$pi+1
done

I revised the commands (by trial & error) to the following, which gives no
syntax error except that it says "unexpected end of file" after the last
line:

#!/bin/bash -x
pdt="/cygdrive/e/temps"
pcase="case2"
#
cat $pdt/$pcase/$pcase'001'.bdf > $pdt/$pcase.temp
pi=2
while [$pi < 241]
do
  if [$pi < 10] 
    cat $pdt/$pcase/$pcase'00'$pi.bdf >> $pdt/$pcase.temp
  ei 
    if [$pi < 100] 
      cat $pdt/$pcase/$pcase'0'$pi.bdf >> $pdt/$pcase.temp
    ei [$pi >= 100] 
      cat $pdt/$pcase/$pcase$pi.bdf >> $pdt/$pcase.temp
    endif
  endif
  echo $pi
  pi=$pi+1
enddo

Please help.  Thanks

Pete Harter
ITT A/CD Mechanical Analysis
219-451-6865
< mailto:pete.harter@itt.com >


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^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2001-09-06 10:55 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-09-05 23:36 "if" "then" "elif" "fi" "done" Fritz, Wolfgang
2001-09-06  2:25 ` AW: " Ralf Habacker
2001-09-06  3:58   ` Nick Drage
2001-09-06  5:46 ` Wayne Willcox
  -- strict thread matches above, loose matches on Subject: below --
2001-09-06 10:55 Heribert Dahms
2001-09-05 23:01 Harter, Pete

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