it doesnt work properly. do you know what is the problem?
Like they said, it's not a shell, it doesn't split for you.
Also, if it did work, your program would immediately quit, because execl doesn't launch a new program -- it replaces your current program. If you want to create a new process, you have to fork first, then exec. Watch the return value of fork carefully. It creates a clone of your process, and its return value is the only thing which tells them which is which. You have to make sure your child process only does what the child should be doing and not anything else, make sure it quits if exec doesn't work and such.
open, creat, read, write, lseek and close
Are they all primitive?
:confused:
*Another Question: is there a different between a system call, and an i/o system call? (2 Replies)
Hi,
I'm new to UNIX system calls. Can someone share your knowledge as to how exactly system calls should be executed?
Can they be typed like commands such as mkdir on the terminal itself? Also, are there any websites which will show me an example of the output to expect when a system call like... (1 Reply)
Hello,
how would i be able to call ps in C programming?
thanks,
---------- Post updated at 01:39 AM ---------- Previous update was at 01:31 AM ----------
here's the complete system call, ps -o pid -p %d, getpit() (2 Replies)
Hi friends,
I have three questions.
1) What are system calls?
2) Is it necessary that system calls be in c language (in unix operating system)?
3) Importance of c language when programming in unix environment???
Looking forward to your wonderful replies!
... (2 Replies)
Hi friends,
I hope everyone is fine and doing well. I queried in my previous thread about the low-level qualities of C/C++ languages.I really thank you people for explaining, it was really helpful. One more ambiquity that I have in my mind is regarding the unix system calls like open, creat,... (1 Reply)
Discussion started by: gabam
1 Replies
LEARN ABOUT DEBIAN
ninjahelper
NINJAHELPER(1) backupninja package NINJAHELPER(1)NAME
NINJAHELPER - A menu driven curses-based interface to walk you through backupninja configuration.
SYNOPSIS
ninjahelper
DESCRIPTION
Ninjahelper is an helper script to walk you through configuration of the backup tasks for backupninja. It is a curses based "wizard" with
an intuitive menu-driven interface.
ADDING NEW HELPERS
To add an additional 'wizard' to ninjahelper, follow these steps:
(1) create a file in the handlers directory (eg. /usr/share/backupninja) using the .helper extension. For example, if you wish to create
a helper for the handler "blue", create the file /usr/share/backupninja/blue.helper.
(2) next, add your helper to the global HELPERS variable and define the main function for your helper (the function name is always
<helper>_wizard). To use the blue.helper as an example: HELPERS="$HELPERS blue:description_of_this_helper"
blue_wizard() {
... do work here ...
}
(3) look at the existing helpers to see how they are written. Try to re-use functions, such as the dialog functions that are defined in
easydialog.sh, or the vserver functions defined in lib/vserver.
(4) test, re-test, and test again. Try to break the helper by going backwards, try to think like someone who has no idea how to config-
ure your handler would think, try to make your helper as simple as possible. Walk like a cat, become your shadow, don't let your
senses betray you.
SEE ALSO backupninja(1), backupninja.conf(5), backup.d(5),
AUTHOR
BACKUPNINJA was written by the riseup.net collective.
riseup january 19, 2006 NINJAHELPER(1)