Re: OT: quoting variable names in shell scripts

2011-07-07 Thread Teemu Likonen 
* 2011-07-07T07:13:24+02:00 * Javier Barroso wrote:

 On Thu, Jul 7, 2011 at 5:22 AM, Kamaraju S Kusumanchi
 raju.mailingli...@gmail.com wrote:
 Consider the following shell script

 #! /bin/sh

 You can use array variables if you want:

 names=(kama raju k a m a)
 for i in ${names[@]}

Yes, but not with /bin/sh. OK, it's usually possible to just change the
interpreter to /bin/bash, but with /bin/sh the $@ array can be used:

$ set -- first item second item
$ for i in $@; do echo $i; done
first item
second item


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Re: OT: quoting variable names in shell scripts

2011-07-07 Thread Javier Barroso 
On Thu, Jul 7, 2011 at 10:31 AM, Teemu Likonen tliko...@iki.fi wrote:
 * 2011-07-07T07:13:24+02:00 * Javier Barroso wrote:

 On Thu, Jul 7, 2011 at 5:22 AM, Kamaraju S Kusumanchi
 raju.mailingli...@gmail.com wrote:
 Consider the following shell script

 #! /bin/sh

 You can use array variables if you want:

 names=(kama raju k a m a)
 for i in ${names[@]}

 Yes, but not with /bin/sh. OK, it's usually possible to just change the
 interpreter to /bin/bash, but with /bin/sh the $@ array can be used:

Ooops, true!! :) I have not an shell interpreter in my head :-P

Thanks!


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Re: OT: quoting variable names in shell scripts

2011-07-07 Thread John Hasler 
Kamaraju writes:
 I am wondering if there is a way to rewrite the names variable in
 stanza2 such that the output from stanza 1 and stanza 2 are the same.

I can think of several, but I doubt any will do what you want.  What is
your actual problem?  What are you trying to achieve?
-- 
John Hasler


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OT: quoting variable names in shell scripts

2011-07-06 Thread Kamaraju S Kusumanchi 
Consider the following shell script

$cat manual_listing.sh  

   
#! /bin/sh

# stanza 1
for i in kama raju k a m a r a j u
do
echo $i
done

# stanza 2
names='kama raju'
for i in $names
do
echo $i
done


If I run this, I get
$./manual_listing.sh

  
kama
raju
k a m a
r a j u
kama
raju

I am wondering if there is a way to rewrite the names variable in stanza2 
such that the output from stanza 1 and stanza 2 are the same.

thanks in advance
raju
-- 
Kamaraju S Kusumanchi
http://malayamaarutham.blogspot.com/


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Re: OT: quoting variable names in shell scripts

2011-07-06 Thread William Hopkins 
On 07/06/11 at 11:22pm, Kamaraju S Kusumanchi wrote:
 Consider the following shell script
 
 $cat manual_listing.sh
   

 #! /bin/sh
 
 # stanza 1
 for i in kama raju k a m a r a j u
 do
 echo $i
 done
 
 # stanza 2
 names='kama raju'
 for i in $names
 do
 echo $i
 done
 
 
 If I run this, I get
 $./manual_listing.sh  
   
   
 kama
 raju
 k a m a
 r a j u
 kama
 raju
 
 I am wondering if there is a way to rewrite the names variable in stanza2 
 such that the output from stanza 1 and stanza 2 are the same.

=---=
#!/bin/bash

IFS=,

name='kama,raju,k a m a,r a j u'
for i in $name
do
  echo $i
done
=---=

$man bash

Shell Variables
...
   IFSThe  Internal Field Separator that is used for word splitting
  after expansion and to split lines into words with the read
  builtin command.  The default value is  ``spacetabnew‐
  line''.

-- 
Liam


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Re: OT: quoting variable names in shell scripts

2011-07-06 Thread Javier Barroso 
On Thu, Jul 7, 2011 at 5:22 AM, Kamaraju S Kusumanchi
raju.mailingli...@gmail.com wrote:
 Consider the following shell script

 $cat manual_listing.sh
 #! /bin/sh

 # stanza 1
 for i in kama raju k a m a r a j u
 do
        echo $i
 done

 # stanza 2
 names='kama raju'
 for i in $names
 do
        echo $i
 done


 If I run this, I get
 $./manual_listing.sh
 kama
 raju
 k a m a
 r a j u
 kama
 raju

 I am wondering if there is a way to rewrite the names variable in stanza2
 such that the output from stanza 1 and stanza 2 are the same.

You can use array variables if you want:

names=(kama raju k a m a)
for i in ${names[@]}
do
echo $i
done

Search [@ (probablily escaping both) inside man bash

Regards,


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