Visit The New, Modern Unix Linux Community


Bourne Shell: Hiding error messages


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Bourne Shell: Hiding error messages
# 1  
Bourne Shell: Hiding error messages

I am executing commands as follows in Bourne shell script. Filenames/directory names for the deletion/copying are unknown:

rm *
rmdir <directory>
cp -p * <directory>

Sometimes when no file or directory exists, error is encountered. This has no impact or whatever issue to my script but it's ugly to show to the users.

I want to prevent the error message from being displayed. Is there a way for me to prevent it?
# 2  
Code:
rm * 2> /dev/null
rmdir <directory> 2> /dev/null
cp -p * <directory> 2> /dev/null

# 3  
Quote:
Originally Posted by totziens
I am executing commands as follows in Bourne shell script. Filenames/directory names for the deletion/copying are unknown:

rm *
rmdir <directory>
cp -p * <directory>

Sometimes when no file or directory exists, error is encountered. This has no impact or whatever issue to my script but it's ugly to show to the users.

I want to prevent the error message from being displayed. Is there a way for me to prevent it?
Just redirect the output to /dev/null directory. If you get any error it will be redirected to this directory.

Code:
rm * 2>/dev/null

# 4  
Actually I tried this before but it failed. I could still see the error message. See the following:

> rm * >/dev/null
rm: No match.


> rm * 2>/dev/null
rm: No match.
# 5  
the * will be evaluated bij the shell, if there's nothing to remove, it'll give an error.

send the std-err to the std-out:

rm * > /dev/null 2>&1
# 6  
Thanks a lot, pjottum. It works now

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #521
Difficulty: Medium
0b110010000001 = 2^11 + 2^10 + 2^7 + 2^0
True or False?

10 More Discussions You Might Find Interesting

1. Cybersecurity

'Shell Shock' vulnerability in Bourne shell

A severe vulnerability was discovered in Bourne shell. Just google for: bash vulnerability ... for more details. (5 Replies)
Discussion started by: Cochise
5 Replies

2. UNIX for Dummies Questions & Answers

Hiding shell script code

How can we share a script without actually sharing the code? I have 4 scripts in my system. The end user has to execute the first file and based on the inputs (I am reading 1, 2 , 3 as options) my shell script will execute respective script files. Now I dont want to share all the 4 script... (3 Replies)
Discussion started by: Dish
3 Replies

3. Shell Programming and Scripting

Bourne shell & Korn shell

Could some one tell me the difference btw Bourne shell and the Kshell? Which is more flexible and reliable in terms of portability and efficiency. When i type the following command .. $ echo $SHELL yields me /bin/sh Does this tells me that I am in Bourne shell. If yes, how can i get... (6 Replies)
Discussion started by: bobby1015
6 Replies

4. Shell Programming and Scripting

bourne shell script error on line containing declare...

Hi, Get the following error when running a shell script with following statement. Syntax error at line 150 : `(' is not expected 150: declare -a VPO_SEV=(Normal Warning Minor Major Critical) it runs fine using bash, so I guess the script should be using bash but is there a... (1 Reply)
Discussion started by: wilsonee
1 Replies

5. Shell Programming and Scripting

Bourne/C shell help

Exercise Five Write a Bourne shell script which: Professionalism: plan for this from the start. Has one command line argument. If the command line argument is a directory then the script should output the number of files in the directory. If the command line argument is an ordinary... (2 Replies)
Discussion started by: moesom
2 Replies

6. Shell Programming and Scripting

Bourne Shell - Dynamic Variable Error

hi, I am trying to assign a value through 'read' and all works well until I have a space in the in putted value, for the life of me I cant figure out how to escape this. :wall: Any ideas? #!/bin/sh ask_question() { question_text="${1}"; question_answer=""; ... (2 Replies)
Discussion started by: redback
2 Replies

7. Shell Programming and Scripting

Hiding error report

Hi Guys, Error report is still displaying on the console after executing the below command. Is there any error in the syntax? check_event=$(cat /sbt/driver/RegressionTests/ResultsArchive/${environment}/$backupPath/TestEvents.txt | g rep "Test Cases FAIL" | cut -c 18-) 2> log2 (4 Replies)
Discussion started by: ajincoep
4 Replies

8. Shell Programming and Scripting

How to activate Korn Shell functionnalities in Bourne Shell

Hi All I have writing a Korn Shell script to execute it on many of our servers. But some servers don't have Korn Shell installed, they use Borne Shell. Some operations like calculation don't work : cat ${file1} | tail -$((${num1}-${num2})) > ${file2} Is it possible to activate Korn Shell... (3 Replies)
Discussion started by: madmat
3 Replies

9. Shell Programming and Scripting

I need to understand the differences between the bash shell and the Bourne shell

I do not claim to be an expert, but I have done things with scripts that whole teams of folks have said can not be done. Of course they should have said we do not have the intestinal fortitude to git-r-done. I have been using UNIX actually HPUX since 1992. Unfortunately my old computer died and... (7 Replies)
Discussion started by: awk_sed_hello
7 Replies

10. UNIX for Dummies Questions & Answers

Bourne-again shell

Hi guys !! well i'm still new in learning UNIX , and actually i'm still studying it by myself .. anyway, some people told me the Bourne-again shell is a good version of UNIX to work on , and i tried to download yesterday but i didn't know how to start it ...... the ReadMe file associated with... (3 Replies)
Discussion started by: mrsamer
3 Replies

Featured Tech Videos