01-13-2011
Hi Citaylor:
I totally understand that part.
But for GNU diff, the return status of "diff file1 file1" should be 0 (no difference found), while "diff file1 file2" should be 1.
Therefore, the "diff file1 file1 && echo 1" should not print out anything. But in our system, it print out 1.
so basically, the return status of diff (or grep) is opposite to typical.
"man diff" shows "An exit status of 0 means no differences were found, 1 means some differences were found, and 2 means trouble."
Does your system behave the same way?
Thanks.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello there!
Here is my problem. I hope I can get some help about it.
I need to know how can I get the return code of an application in the Unix shell script.
The script is like below:
PREVIOUS STATEMENT & VARIABLES
sqlplus scott/tiger @$sqldir/$sqlscript
NEXT STATEMENT (Like... (7 Replies)
Discussion started by: Shaz
7 Replies
2. Shell Programming and Scripting
Hello,
I still have problems when trying to figure out if the status of an ftp was successful. I ftp to different types (nt, vax, unix, etc...) of machines. I am trying to write a universal script that will ftp a file and then check to see if the ftp was successful. I have tried the... (12 Replies)
Discussion started by: blt123
12 Replies
3. Shell Programming and Scripting
hi, I set the crontab to execute script A every 5 minutes from 9:00 am to 4:00 pm everyday, now at 12:00am I want to run another script if and only if all the previous runs of script A return OK, can anyone tell me how it could be done? thank you very very much! (4 Replies)
Discussion started by: mpang_
4 Replies
4. Shell Programming and Scripting
Hi all
below is a snippet of my perl codesystem ("scp -pq $dest_file $path");How i can i trap the return status? ie if the scp fails how can i know ? (2 Replies)
Discussion started by: new2ss
2 Replies
5. HP-UX
I have the question:
How return the exit code from then assign :
VAR=$(command ) for ex. VAR=$(ls ....)
VAREXIT=$?
echo $VAREXIT
VAREXIT is equal to 0 if the directory exist or not exist. WHI??
if i execute the command direct from line-command , the value of $? is different if... (1 Reply)
Discussion started by: ZINGARO
1 Replies
6. Shell Programming and Scripting
Hi all
I'm trying to evalute the return status of a function without much success. I've put a very basic example below to explain.
check_ok() works fine but when used within an if statement, it always returns true, whether it is true or false. I'm guessing it returns true as the function... (4 Replies)
Discussion started by: tig2810
4 Replies
7. Shell Programming and Scripting
Hello, I wanted to delete all files which are placed 14 days back. Here is my below script. My script works very well and it deletes all files 14 days back.
I wanted to display message incase if the delete script is not successful. The below script returns always successful. But the directory... (6 Replies)
Discussion started by: govindts
6 Replies
8. UNIX for Advanced & Expert Users
Hi Experts:
I have a shell script that's kicked off by cron. Inside this shell script, I need to kick off two or more oracle sql scripts to process different groups of tables. And when both sql scripts are done, I will continue in the shell script to do other things like checking processing... (3 Replies)
Discussion started by: huasheng8
3 Replies
9. Shell Programming and Scripting
Hi can you explain me, what does variables $@ and $* return and how are they used, if can give me a sample example it could be helpful.
Thanks in advance,
Regards,
Abhishek S. (1 Reply)
Discussion started by: abhisheksunkari
1 Replies
10. Shell Programming and Scripting
Hi All,
I need to return value to the main shell script, depending on whether the UPDATE command in the embedded pl/sql is successfu or not.
#!bin/ksh
updateStatus=`sqlplus --conn details-- << EOF
DECLARE
var_rows NUMBER;
BEGIN
update table_name
set column_name =... (7 Replies)
Discussion started by: rituparna_gupta
7 Replies
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)