02-12-2014
Signal out from fork()'d shell script back to the C++ application
Hi,
I am writing a C++ application; in which at one point I fork() a new process, which executes a shell script (via execv() call).
Now the shell script can take a while to finish (tarring, burning a cd, etc.) and I would like to update the parent application about the progress (while the script is running).
Any ideas on how to do this?
Thank you!
Miro
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
AIX 4.3.3
I am trying to write a signal handler into a ksh shell script. I would like to capture the SIGTERM, SIGINT, and the SIGTSTP signals, print out a message to the terminal, and continue executing the script. I have found a way to block the signals:
#! /bin/ksh
SIGTERM=15
SIGINT=2... (2 Replies)
Discussion started by: jalburger
2 Replies
2. UNIX for Advanced & Expert Users
Hi
can any please tell me
is it possible to catch the signal in a shell script like we do in C.
if yes please give me some idea or a link. (4 Replies)
Discussion started by: Raom
4 Replies
3. Shell Programming and Scripting
Helo,
I want to write shell script which takes back of all binaries (exe files).
and when i uninstall the upgraded system which automatically restore the old binary which we have take as back up.
can u tell me how to write such shell scripts.
Regards,
Amit (5 Replies)
Discussion started by: amitpansuria
5 Replies
4. Shell Programming and Scripting
I need to write a c program that uses the fork and excel system calls to run the shell script mode invoked like this: "./mode 644 ls -l" (that is the argumetns will always be 644 ls -l)
here's the mode script:
#!/bin/sh
octal="$1"
shift
find . -maxdepth 1 -perm $octal -exec $@ {} \;
... (3 Replies)
Discussion started by: computethis
3 Replies
5. Shell Programming and Scripting
Hi ,
I do have a shell which test the connectivity using ssh, soon after the login it should use the keys Ctrl + z or Ctrl + c to exit from login promt. So how do i need to implement these . (3 Replies)
Discussion started by: raghunsi
3 Replies
6. Shell Programming and Scripting
Hi ,
i have a scenario where...i have to put a check where if script is executing more than 15mins i have to kill that script and n retry again 2nd time.
i this case i can use background process to do it but i feel trap will be the efficent way to do so...
but i dont know much about it... (1 Reply)
Discussion started by: crackthehit007
1 Replies
7. Shell Programming and Scripting
When command is executed by forking, the console displays the status of that command. I want to suppress it.. how to do it ?
Example:
var1=`date` &
echo "hello world";
output:
hello world
+ Done var1=`date`
I want to suppress the second line "+ Done var1=`date`".
I... (10 Replies)
Discussion started by: Arun_Linux
10 Replies
8. Shell Programming and Scripting
Hi, I'm writing a shell script where I want to call fork(). However I wrote like this "var=fork()" in c style and got this error:
"syntax error near unexpected token `(' "
How could I call fork() in shell script? Thanks in advance.
Duplicate Post - Continue Here - Please Do Not Cross Post... (0 Replies)
Discussion started by: Xiaoya
0 Replies
9. Ubuntu
Hi, I'm writing a shell script where I want to call fork(). However I wrote like this "var=fork()" in c style and got this error:
"syntax error near unexpected token `(' "
How could I call fork() in shell script? Thanks in advance. (2 Replies)
Discussion started by: Xiaoya
2 Replies
10. Shell Programming and Scripting
Hi All,
I have a shell script(test_abc.sh) with the following shell commands, which are invoking the same shell script with different parameters.
test_abc.sh
. ./test.sh abc >> test.log
. ./test.sh xyz >> test.log
. ./test.sh pys >> test.log
. ./test.sh abc >> test.log
.
.
... (4 Replies)
Discussion started by: dev.devil.1983
4 Replies
script(1) User Commands script(1)
NAME
script - make record of a terminal session
SYNOPSIS
script [-a] [filename]
DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
record is saved in the file typescript. See WARNINGS.
The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
when the forked shell exits or when Control-d is typed.
OPTIONS
The following option is supported:
-a Appends the session record to filename, rather than overwriting it.
NOTES
script places everything that appears on the screen in filename, including prompts.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |Enabled |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5)
WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
privileged user, that is, root. Be sure that typescript is not a link before running script.
SunOS 5.10 30 Jan 2004 script(1)