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Old 01-06-2012, 01:22 AM   #1
harishisnow
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Registered: Nov 2010
Location: bangalore, india
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Bash script problem


Hello,

I am writing a bash script which uses the find command and stores the result of the find command to a variable. How do I retreive the values present in the variable one by one?

ie:
#!/bin/sh

VAR=`find /home/par_dir -type f -name "target_file" -print`

(The result of the find command is:
/home/par_dir/abc/target_file
/home/par_dir/xyz/target_file
)

Now, when I use
for linee in VAR
do
echo $linee
done

I am not able to retreive the rows one by one.
Can anybody help me in doing so?

Thanks in advance..!!

Regards,
Harish
 
Old 01-06-2012, 01:31 AM   #2
corp769
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Registered: Apr 2005
Posts: 5,817

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Best way to go, IMO, is using an array for this. Have a look here - http://stackoverflow.com/questions/1...o-a-bash-array

Cheers,

Josh
 
Old 01-06-2012, 02:06 AM   #3
David the H.
Bash Guru
 
Registered: Jun 2004
Location: Osaka, Japan
Distribution: Debian sid + kde 3.5 & 4.4
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You'll find just about everything you need to know here:

http://mywiki.wooledge.org/BashFAQ/001


I recommend using a loop to set the files into an array instead of a scalar variable.

Code:
while IFS="" read -r -d "" file; do array+=( "$file" ) ; done < <( find . -print0 )
 
Old 01-06-2012, 02:13 AM   #4
corp769
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Technically, either way would work. Besides, that's what I meant by giving that link to the OP. Maybe you were looking at something different on that page?
 
Old 01-06-2012, 07:24 PM   #5
David the H.
Bash Guru
 
Registered: Jun 2004
Location: Osaka, Japan
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I was just reiterating what you said, really, while adding another link with a slightly broader focus than yours, and a scripting example.

We agree that arrays are the way to go here, certainly. Any time you have a list of related strings, such as file names, you should be using an array for it.

More help on arrays here:
http://mywiki.wooledge.org/BashGuide/Arrays
http://www.tldp.org/LDP/abs/html/arrays.html
 
  


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