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export / import

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# 1  
Old 03-08-2011
export / import
I have a calling script which consists of calls to other scripts via the sh command.

ie vi callscript.sh
Code:
 sh  smallscript1.sh
 extra unix commands
 sh  smallscript2.sh
 exit


In smallscript1, I prompt for a filename, which I handle via :-
Code:
read f1
export f1



I then need to use $f1 later on, because I need to pass it’s value into the following script to allow files created in it to be named with this value.

In smallscript2.sh I define :-
Code:
   mv  run5.txt   /home/dir1/$f1_5.prt


But if I do a ‘ls –la’ in /home/dir1, all I see is .prt on its own.

Do I need the equivalent of an IMPORT f1 somewhere ?
Last edited by vbe; 03-08-2011 at 10:37 AM.. Reason: code tags please
# 2  
Old 03-08-2011
Can you execute the first script in the current shell it self?

I mean:

Code:
. smallscript1.sh
extra unix commands
sh smallscript2.sh
exit

# 3  
Old 03-08-2011
export & import
Hi panyam
Yes I can execute the 1st one.
In the 'extra unix commands' I use the prompted value.
It is just making it available in the called script that I cannot get to work.
Thanks for your help..
# 4  
Old 03-08-2011
Further to panyam
Quote:
. smallscript1.sh
The way you call smallscript.sh is important.
The dot-space-scriptname causes smallscript.sh to execute within the environment of callscript.sh. Thus any environment variables exported by smallscript.sh are available to smallscript2.sh .

Just noticed: There is a bug in smallscript2.sh
Quote:
mv run5.txt /home/dir1/$f1_5.prt
An underscore is a valid character in a variable name. We need curly brackets to tell Shell where the variable name stops!
Code:
mv  run5.txt   /home/dir1/${f1}_5.prt

Last edited by methyl; 03-08-2011 at 11:20 AM.. Reason: Just noticed...
This User Gave Thanks to methyl For This Post:
malts18
# 5  
Old 03-08-2011
This is what I did

Code:
 
$ cat main.sh
. scr1.sh
echo "Main Script"
echo $f1
sh scr2.sh
 
$ cat scr1.sh
read f1
export f1
 
$ cat scr2.sh
touch $f1

$ ./rem.sh
test_file ## I am inputting this value
Main Script
test_file

$ ls -l test_file
-rw-rw-rw-   1 cust       users            0 Mar  8 21:01 test_file

This User Gave Thanks to panyam For This Post:
malts18
# 6  
Old 03-09-2011
export / import
Hi panyam & methyl
I changed the 'sh' to the '.' when calling smallscript1, and inserted '{' & '}' around f1 in smallscript2, and my procedure now works great.
Many thanks for your kind assistances.
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