Sponsored Content
Full Discussion: Trying to block signal
Top Forums UNIX for Dummies Questions & Answers Trying to block signal Post 302465388 by methyl on Friday 22nd of October 2010 10:05:28 AM
Old 10-22-2010
I have no idea what the relevence of DGPickett's post is.

The ctrl/z is being picked up by shell before it gets to your program. In foreground ctrl/z is commonly mapped to SUSP (suspend). The program can be brought to foreground with the "fg" Shell command.

To see the mapping of the various control keys in your session:
Code:
stty -a

Each and every one of these can (and often will) be disabled or changed to suit individual terminals or applications. See "man stty" for your O/S.

Many people re-map INTR to ctrl/c for consistency with MSDOS but on many terminals it is not mapped to anything by default.
This User Gave Thanks to methyl For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Alarm signal

Hi, when I execute a script on unix AIX, I've got an error message: "Execution: 85328 Signal d'alarme". If I edit this file with "vi", I ve got the same error after a while (about 1 minute). If I try with another user I still have the problem. But if I rename this file, no problem. My... (5 Replies)
Discussion started by: cgsteph
5 Replies

2. Programming

Signal Names

Hi everyone, Is there a variable or built in function in the Unix env. for me to obtain the name of a signal that is caught? As far as I understand only a numeric value of the signal is returned to the handler. For example: void handler (int signum) { ... (2 Replies)
Discussion started by: laila63
2 Replies

3. UNIX for Advanced & Expert Users

kill signal

Hello e'bdy, We have WebSphere MQ running on AIX 5.1 Every weekend MQ receives a kill -30 signal from some process or user and offloads a big error file. There is no way in MQ through which that process can be tracked. Is there something which i can do on UNIX level to trap the process? Best... (3 Replies)
Discussion started by: jhaavinash
3 Replies

4. UNIX for Advanced & Expert Users

Kill Signal

Hello, I'm doing a project of OS simulation (Process Scheduling, to be very specific). Can anyone, please, explain what exactly happens in the background when we see "Sending all processes the KILL signal...........". How is it sent to each process? Is it that something like a boolean is stored... (3 Replies)
Discussion started by: ameya
3 Replies

5. Shell Programming and Scripting

Signal question

Who can explain the meaning of the &2 &1 or @, #, etc in the script? Is there any document which can explain the usage of these words in details? for example: ls /etc/sysconfig/network > /dev/null 2>&1 #@ bash, ksh and sh. Thanks in advance for ur advice. (1 Reply)
Discussion started by: GCTEII
1 Replies

6. Shell Programming and Scripting

signal script?

I have a script which invoke a java program, because the program requires file as input, hence the script would sleep a X seconds then check for file existence, if the file exists then program is invoker else, keep waiting until the time is up. My problem is that if there is a way to find out if my... (1 Reply)
Discussion started by: mpang_
1 Replies

7. Programming

Signal catching

Hi! I want to catch all signals that my program receives print their name and then execute the default handler. Can you help me on that? I've tried the following code: #include <stdio.h> #include <unistd.h> #include <signal.h> void (*hnd)(int i); char signals = { "SIGHUP",... (7 Replies)
Discussion started by: dark_knight
7 Replies

8. Shell Programming and Scripting

Killed by signal 15.

Hi all I have Master script, Main script ,and 4 Child script. Master.sh #!/bin/bash /export/home/user/Main.shMain.sh #!/bin/bash /export/home/user/Child1.sh & /export/home/user/Child2.sh & /export/home/user/Child3.sh & /export/home/user/Child4.sh &I run only Master.sh script... (1 Reply)
Discussion started by: almanto
1 Replies

9. Programming

queue a signal

A program have to receive signals and work agreed with it, but the process have to receive more than one signal when it is attending other. Those have to be queued to be attended later recived. how can i do that? thanks. (2 Replies)
Discussion started by: marmaster
2 Replies

10. Programming

Signal function

Hello I want to know how can i use signal function in c for keyboard interrupt handling. what i exactly want is : my program is processing and if i press any key while processing , the program should call the interrupt and displays/prints that key and now goes back to processing. I added the... (5 Replies)
Discussion started by: Jahanzeb
5 Replies
HEXCURSE(1)						      General Commands Manual						       HEXCURSE(1)

NAME
hexcurse - an ncurses-based hex editor SYNOPSIS
hexcurse [ -? | -help ] [ -a ] [ -r rnum ] [ -o outputfile ] [ [ -i ] inputfile ] DESCRIPTION
hexcurse is an ncurses-based hexeditor utility that is able to open, modify, and save a file to disk while providing useful editing and searching options. OPTIONS
-? | -help Prints out the command usage info -a Specifies the addresses to be output in decimal format initially. -r rnum Specifies the number of characters per line that the hexeditor should output. If rnum is either less than 1 or greater than the columns of the current terminal, hexcurse will fill the terminal width, just as if the -r was not specified. -o outputfile Specifies the output file to be written to by default. [-i] inputfile Specifies the input file to be read in. -i is not needed if inputfile is the last argument on the line. INTERACTIVE OPTIONS
F1 | ctrl+? Shows key command help. F2 | ctrl+s Save the current file. F3 | ctrl+o Opens a file. F4 | ctrl+g Goto a certain location in the current file. Depending on which way the addresses are being viewed at the moment, the search will behave differently. If the addresses are currently in hex format, the search will search as if the input was given in hexadecimal format. If the addresses are in decimal format, the function will search for the address in decimal. F5 | ctrl+f Search for a certain string in the current file. Depending on which window the user is currently editing in, this search will behave differently. If editing in the hex window, the input should only be in hexadecimal, and it will search for the hexadecimal "string." If the current editing window is the ASCII window, the input should be ASCII characters, and the search will find that ASCII string in the file. F6 | ctrl+a Switch between hexadecimal address values and decimal address values. F7 | TAB Switch between the hexadecimal and ASCII editing windows. F8 | ctrl+q | ctrl+x Exit out of the program. Page Up | ctrl+u Scroll one 'page' up. Page Down | ctrl+d Scroll one 'page' down. Home | ctrl+t Returns to the top of the file. End | ctrl+b Jumps to the bottom of the file. ctrl+z Undo the last modification. Can be used multiple times. Esc Escapes out of the save, open, goto, and find prompts. SEE ALSO
hexdump(1) , ncurses(3) AUTHORS
The authors of hexcurse are: jewfish <jewfish@jewfish.net> armoth <uknowho@jewfish.net> The current version of this software is always availabe at http://www.jewfish.net/software.php BUGS
On some terminals the function keys will not work. Support for resizable terminals is still a bit rudimentary. At this time, when the terminal is resized, the cursor is positioned at the beginning of the file. This will be corrected in the next release. There is also an issue where the labels on the bottom of the screen do not resize correctly. A fix for the latter is in the works. To report a bug or problem, please e-mail: devel@jewfish.net TODO
When we get the time, we would like to implement the ability to insert and delete data from the file. Please e-mail us with any additional suggestions. 22 December 2003 HEXCURSE(1)
All times are GMT -4. The time now is 08:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy