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VARIABLE HANDLING in UNIX

 
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# 1  
Old 05-28-2005
VARIABLE HANDLING in UNIX
Hi All,
Smilie
can anyone throw some light on variable handling in UNIX script??
I want to know about the local variables we declare inside the UNIX script.


e.g.
i=10
OR

cat file1 | while read line
do
echo $line
done

etc.
Does UNIX have any data types
Can some one recomend any link or book for this???
Thanx
VEN.
# 2  
Old 05-28-2005
You could try out the online unix scripting guide. You can find it at

http://www.linuxvoodoo.com/resources...ide/index.html

Another thing, while reading your post you mentioned
Code:
cat file1 | while read line
do
echo $line
done

A better way for the above is
Code:
while read line
do
echo $line
done < file1

The 'cat' in your code is what is termed as an UUOC-useless use of cat.

man cat says..cat - concatenate files and print on the standard output

Anyway that was just an advice.

Vino
 
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