07-04-2005
keystroke trap
Hi,
How to track/trap the keyboard strokes in the script
say for eg, in normal scene, when a script is running, if a press control c, the program gets terminated...
so in this case, how do i trap the keystrokes so as to avoid the abort of the program..
pls help
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
#!/bin/csh
I'm using a `while(1)` loop to dispaly real-time information about various files on my system, and I use ^C to exit it when needed. I was hoping there was a way to exit the script on a normal keystroke such as "q". Can someone point me in the right direction? I'm willing to use a... (7 Replies)
Discussion started by: seg
7 Replies
2. Linux
Don't you just hate crackers?
Ok, I have a user on my server who is always causing trouble. He is constantly trying to get into files, change stuff, get users passwords, etc. I was wondering if Linux has a built in keystroke log, or event log of some sort that I may use to track his movements. ... (4 Replies)
Discussion started by: Phobos
4 Replies
3. Shell Programming and Scripting
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
4. Shell Programming and Scripting
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. UNIX for Dummies Questions & Answers
Hi,
I need to modify some entries in LDAP, but with what keystroke do I exit and apply the changes?
Thanks
Brissix (0 Replies)
Discussion started by: brissix
0 Replies
6. Cybersecurity
Hi all,
Does anyone know if there is a tool in the market that could do the following when System Admin log to the server as root and perform activities according to his change request:
- trap or log his keystroke for the entire duration
- provide a report on the changes SA has made to the... (3 Replies)
Discussion started by: mohzub
3 Replies
7. Shell Programming and Scripting
Hi All ,
I am writing a shell script for a 3D test case . The 3D Test case involves the user to press some keys to see the changes in the 3d test case . The user has to press p , r , a , z etc to observe the changes on screen .
Now please let me know how can i implement the keystroke p , a ,... (1 Reply)
Discussion started by: dskonnur
1 Replies
8. UNIX for Dummies Questions & Answers
i have the below script:
#!/bin/bash
echo "enter a"
read a
echo "enter b"
read b
let c=a+b
echo $c
at any point of time between entering the value for a and b,if user presses ctrl+a key combination, then it should start from the beginning(the script should be restarted).
it should... (4 Replies)
Discussion started by: pandeesh
4 Replies
9. Homework & Coursework Questions
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
10. UNIX for Advanced & Expert Users
I'm having an issue with keystoke logging. As we know in unix you can press tab to auto-complete a command or whatever it is you are typing. Well keystoke logging in /var/log/ks, tabs are actually showing up as tabs rather than whatever the auto-completion was.
Any ideas? (5 Replies)
Discussion started by: scj2012
5 Replies
trap(1) User Commands trap(1)
NAME
trap, onintr - shell built-in functions to respond to (hardware) signals
SYNOPSIS
sh
trap [ argument n [n2...]]
csh
onintr [-| label]
ksh
*trap [ arg sig [ sig2...]]
DESCRIPTION
sh
The trap command argument is to be read and executed when the shell receives numeric or symbolic signal(s) (n). (Note: argument is scanned
once when the trap is set and once when the trap is taken.) Trap commands are executed in order of signal number or corresponding symbolic
names. Any attempt to set a trap on a signal that was ignored on entry to the current shell is ineffective. An attempt to trap on signal 11
(memory fault) produces an error. If argument is absent all trap(s) n are reset to their original values. If argument is the null string
this signal is ignored by the shell and by the commands it invokes. If n is 0 the command argument is executed on exit from the shell. The
trap command with no arguments prints a list of commands associated with each signal number.
csh
onintr controls the action of the shell on interrupts. With no arguments, onintr restores the default action of the shell on interrupts.
(The shell terminates shell scripts and returns to the terminal command input level). With the - argument, the shell ignores all inter-
rupts. With a label argument, the shell executes a goto label when an interrupt is received or a child process terminates because it was
interrupted.
ksh
trap uses arg as a command to be read and executed when the shell receives signal(s) sig. (Note that arg is scanned once when the trap is
set and once when the trap is taken.) Each sig can be given as a number or as the name of the signal. trap commands are executed in order
of signal number. Any attempt to set a trap on a signal that was ignored on entry to the current shell is ineffective. If arg is omitted
or is -, then the trap(s) for each sig are reset to their original values. If arg is the null (the empty string, e.g., "" ) string then
this signal is ignored by the shell and by the commands it invokes. If sig is ERR then arg will be executed whenever a command has a non-
zero exit status. If sig is DEBUG then arg will be executed after each command. If sig is 0 or EXIT for a trap set outside any function
then the command arg is executed on exit from the shell. The trap command with no arguments prints a list of commands associated with each
signal number.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
csh(1), exit(1), ksh(1), sh(1), attributes(5)
SunOS 5.10 23 Oct 1994 trap(1)