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Full Discussion: How to return a value of a variable from shell script to perl script
Top Forums Shell Programming and Scripting How to return a value of a variable from shell script to perl script Post 302370628 by srkelect on Thursday 12th of November 2009 03:20:39 AM
Old 11-12-2009
Bug How to return a value of a variable from shell script to perl script
HI ,
Is there any way to return a value of variable from shell to perl script.

Code:
===
Perl file
my $diff1=system("sh diff.sh");
my $diff2=system("sh diff1.sh");

I need exit status of below commands

i.e 0 and 1 respectively.

Since in both the cases diff is working so system command will return 0 .

diff1.sh
-------
a=diff aaa ccc
diff.sh
--------
b=diff aaa bbb



122 $> cat aaa
1hi hello
123 $> cat bbb
hi hello
125 $ cat ccc
1hi hello

120 $ diff aaa ccc
echo $?
0


diff aaa bbb
1c1
< 1hi hello
---
> hi hello
Exit 1

echo $?
1




If i'll use backtick it'll return the diff output like below:
1c1
< 1hi hello
---
> hi hello

But I need script to return a value like 1 if it finds any diffrence between two files and 0 if it doesnot find any diffrence between two files .
 

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LEARN ABOUT X11R4

zcmp

ZDIFF(1)						      General Commands Manual							  ZDIFF(1)

NAME

       zcmp, zdiff - compare compressed files

SYNOPSIS

       zcmp [ cmp_options ] file1 [ file2 ]
       zdiff [ diff_options ] file1 [ file2 ]

DESCRIPTION

       Zcmp  and  zdiff are used to invoke the cmp or the diff program on files compressed via gzip.  All options specified are passed directly to
       cmp or diff.  If only file1 is specified, it is compared to the uncompressed contents of file1.gz.  If two files are specified, their  con-
       tents  (uncompressed  if  necessary)  are  fed to cmp or diff.  The input files are not modified.  The exit status from cmp or diff is pre-
       served.

SEE ALSO

       cmp(1), diff(1), zmore(1), zgrep(1), znew(1), zforce(1), gzip(1), gzexe(1)

BUGS

       Messages from the cmp or diff programs may refer to file names such as "-" instead of to the file names specified.

																	  ZDIFF(1)
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