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Using C language to use system calls

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Homework and Emergencies Homework & Coursework Questions Using C language to use system calls
# 8  
Old 11-22-2012
Quote:
Originally Posted by femchi
Code:
execl("/usr/bin/find","find . -maxdepth 1 -perm 644",(char *)NULL);

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.
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LEARN ABOUT DEBIAN

gnome-schedule

GNOME-SCHEDULE(1)					      General Commands Manual						 GNOME-SCHEDULE(1)

NAME

       gnome-schedule - GNOME GUI for users' crontabs

SYNOPSIS

       gnome-schedule [option...]

DESCRIPTION

       gnome-schedule is a graphical user interface that leverages the power of cron or anacron and at to manage a user's crontab file and provide
       an easy way to schedule tasks. It supports recurrent tasks and tasks that happen only once in the future.  The  user  interface	translates
       cron strings into human-readible form for ease-of-use, but also has an expert option for those familiar with the cron file format.

       For documentation on interactive use of gnome-schedule, select the Help menu option while running the program.

OPTIONS

       gnome-schedule  supports  the standard GTK+ and GNOME command-line options, most of which need not be used except in special circumstances.
       To view a complete list, see gnome-schedule --help.

BUGS

       There are currently no known bugs. If you encounter one, please report it using reportbug gnome-schedule.

SEE ALSO

       cron(8), crontab(1), crontab(5), anacron(1), at(1)

AUTHOR

       This manual page was written by David Moreno Garza <damog@debian.org>, and revised by Christine Spang <christine@debian.org> for the Debian
       project (but may be used by others).

								 November 22, 2007						 GNOME-SCHEDULE(1)