using trap in ksh


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting using trap in ksh
# 1  
Old 02-02-2011
Computer using trap in ksh

I have a script that prompts the user for a response. How can I use the trap command to capture the question ask and the users response to a log file?

Thanks in advance,Smilie
# 2  
Old 02-02-2011
Code:
trap 'printf "Say something: "; read A; echo $A > some_log_file; exit' 0

Or the Q and the A:
Code:
trap 'Q="Say something: "; printf "$Q"; read A; echo $Q $A > some_log_file; exit' 0


Last edited by Scott; 02-02-2011 at 04:45 PM.. Reason: Removed the "why would you want to do that" question
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Homework & Coursework Questions

VM trap may work differently than a pure install trap.

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: That is the last reply I received from my instructor, and I'm looking for some alternatives. When using... (2 Replies)
Discussion started by: newuser45
2 Replies

2. Shell Programming and Scripting

what does this 'trap' do?

trap "" 1 2 3 Thanks, -dog (1 Reply)
Discussion started by: landog
1 Replies

3. Red Hat

KSH script help needed ( nice error trap routine ?)

I am running a script that runs a loop and executes a command on ${i} until the end of the for loop. From time to time the command generates an error ( which is good) for example ERROR0005: How can I trap the error and send an email echoing the ${i} variable in the loop and the error ? ... (2 Replies)
Discussion started by: pcpinkerton
2 Replies

4. Shell Programming and Scripting

Cntl+z Trap is not detecting ??? Help required to add a trap detection ???

Hi folks, I have tried to add some trap detection in the below script....this script is used to monitor database activities...in a rather awkward way :rolleyes:.... The idea behind adding trap is that....this script creates lots of temporary files in the running folder to store the count... (1 Reply)
Discussion started by: frozensmilz
1 Replies

5. Shell Programming and Scripting

How to trap

I have a script #!/bin/ksh trap cleanup 20 cleanup() { cat $t.log echo Caught exit 1 } if ;then echo Found >>t.log exit 20 else echo Not found >>t.log exit 20 fi (5 Replies)
Discussion started by: thana
5 Replies

6. Shell Programming and Scripting

Trap

Hi All "Identify the behavior of traps, mechanism to implement traps in the snmp framework" What does it mean?? Can anybody explain.. Whats this Trap?? Thanx in Advance. (1 Reply)
Discussion started by: jeenat
1 Replies

7. UNIX for Advanced & Expert Users

Need help with trap

Hi Our problem is knowing: What is the "best" way of simulating a TRAP for ERR within a function, since we know this will not work directly with ksh93 and aix5. How can we save the error encountered in the function and then deal with it in the calling script? Thanks! (3 Replies)
Discussion started by: theteeth07
3 Replies

8. Shell Programming and Scripting

Building a better mouse trap, or How many lines of code does it take to trap a mouse?

Hello all, I'm hoping to get a little insight from some of the wily veterans amongst you. I've written a script to check for new outgoing files to our vendors located on our ssl server. It seems to be working ok, but the final question here, will be one of logic, and/or a better way to... (4 Replies)
Discussion started by: mph
4 Replies

9. Shell Programming and Scripting

trap

I'd like to use "trap" command on my unix machine sunOS 5.7. But somehow when I do "which trap" command, it's no where to be found. Any one knows how I can get it installed? Thanks!! (9 Replies)
Discussion started by: whatisthis
9 Replies

10. UNIX for Advanced & Expert Users

Need help with trap

My problem is this: I need to have a catch-all for my processes. An example would be, using a trap, in the parent, to catch any non-0 exit or invalid command (a way to catch core dumps would be cool, too) in not only the parent, but it's children and they're children. Not only that, but I also... (7 Replies)
Discussion started by: marc6057
7 Replies
Login or Register to Ask a Question