Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: evaluate return status of a function
Top Forums Shell Programming and Scripting evaluate return status of a function Post 302212162 by jim mcnamara on Sunday 6th of July 2008 06:38:13 PM
Old 07-06-2008
The return value of cmd | cmd1 | cmd2 is whatever cmd2 returns.
You can use grep -q <pattern> to suppress any out. It returns either > 0 (failure) or 0 = success (pattern found).

Long series of grep <> |grep <> | grep <> ... eat your system for lunch, if you get my drift.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Return status...

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

return ftp status

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

Return status of all previous runs

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

Verify scp return status

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

Return of EXIT status ( $? )

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

Return a value from called function to the calling function

I have two scripts. script1.sh looks -------------------------------- #!/bin/bash display() { echo "Welcome to Unix" } display ----------------------------- Script2.sh #!/bin/bash sh script1.sh //simply calling script1.sh ------------------------------ (1 Reply)
Discussion started by: mvictorvijayan
1 Replies

7. UNIX for Dummies Questions & Answers

opposite return status in c shell

there is something wrong with my system. when I do this: diff file1 file1 && echo 1 the output is 1. but diff file1 file2 >/dev/null && echo 1 output nothing while diff file1 file2 >/dev/null || echo 1 shows 1. the same with "grep" return status. they are both GNU utilities.... (5 Replies)
Discussion started by: phil518
5 Replies

8. Shell Programming and Scripting

Return Status

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

9. Shell Programming and Scripting

Return: can only `return' from a function or sourced script

Not sure where the problem is. I can run the script without any issue using the following command. . /opt/app/scripts/cdc_migration.sh But it fails with the below error when I try it this way /opt/app/scripts/cdc_migration.sh /opt/app/scripts/cdc_migration.sh: line 65: return: can only... (1 Reply)
Discussion started by: svajhala
1 Replies

10. Shell Programming and Scripting

Function - Make your function return an exit status

Hi All, Good Day, seeking for your assistance on how to not perform my 2nd, 3rd,4th etc.. function if my 1st function is in else condition. #Body function1() { if then echo "exist" else echo "not exist" } #if not exist in function1 my all other function will not proceed.... (4 Replies)
Discussion started by: meister29
4 Replies

LEARN ABOUT HPUX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
All times are GMT -4. The time now is 06:09 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy