03-01-2008
10 More Discussions You Might Find Interesting
1. UNIX Desktop Questions & Answers
Hi all!
I`m new in Unix (Linux) and i whant to ask something!
What language should i use for Linux developing.I meen applications an GAME DEVELOPING!
Should i use C,TCL ??? Please help me on this ...:( (1 Reply)
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2. Programming
I am having a windows and i would like to know whitch program do you prefer for programing in windows
P.S. C++ (1 Reply)
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3. Shell Programming and Scripting
plx help to solve these problems??
1. Create a HERE document which will edit multiple files in the same directory, using the ed editor. I give you 3 original files: file1.c , file2.c , file3.c, download them and change each string "stdio.h" to "STDIO.H" in these files. Note: when execute the... (1 Reply)
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4. Programming
Hello
I need to translade the power of unix command shell (grep, sed, awk, wc, etc..) to windows.
In my work every day I administrate 15 unix server ans 18 windows server, and I have the problem the absolutly limitation of windows shell. I´m a system administrator but I know programming.
I... (2 Replies)
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5. Shell Programming and Scripting
Hi...
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pls help! (1 Reply)
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6. IP Networking
Hello experts,
please help me as i want to learn the networking concepts in details ,
as i come know Unix network programming by Richard Stevens volume 1,2
is good please any of you downloaded the Free PDF version of it please direct m e as i want to download these books or the pdf form of it,... (1 Reply)
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7. Programming
im starting to go a little serious with c, woking in a personal project that will read a xml, which might contain Unicode characters (i know it will on my system, which is set to es_AR.UTF-8)
im using mxml, and the documentation says it uses utf8 internally (no worries here).
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Discussion started by: broli
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8. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
Write a Shell script to automatically check that a specified user is logged in to the computer.
The program should allow the person running the script to specify the name of the user to be checked, the frequency in seconds at... (5 Replies)
Discussion started by: operator
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9. Ubuntu
i have problem in running of Linux programing .can i run this programing in ubuntu.
and what will be the procedure for that. please gave me a perfect suggestion.:wall: (8 Replies)
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10. Shell Programming and Scripting
i wrote an awk progarm to calculate throughput from a ns2 trace file. i want this program to act on multiple trace files and it should display each output in a single output file can anyone please clear my doubt i tried with awk -f awkscript inputfile1... (7 Replies)
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LEARN ABOUT REDHAT
crontab
CRONTAB(1) General Commands Manual CRONTAB(1)
NAME
crontab - maintain crontab files for individual users (V3)
SYNOPSIS
crontab [ -u user ] file
crontab [ -u user ] { -l | -r | -e }
DESCRIPTION
Crontab is the program used to install, deinstall or list the tables used to drive the cron(8) daemon in Vixie Cron. Each user can have
their own crontab, and though these are files in /var, they are not intended to be edited directly.
If the allow file exists, then you must be listed therein in order to be allowed to use this command. If the allow file does not exist but
the deny file does exist, then you must not be listed in the deny file in order to use this command. If neither of these files exists,
then depending on site-dependent configuration parameters, only the super user will be allowed to use this command, or all users will be
able to use this command.
If the -u option is given, it specifies the name of the user whose crontab is to be tweaked. If this option is not given, crontab examines
"your" crontab, i.e., the crontab of the person executing the command. Note that su(8) can confuse crontab and that if you are running
inside of su(8) you should always use the -u option for safety's sake.
The first form of this command is used to install a new crontab from some named file or standard input if the pseudo-filename ``-'' is
given.
The -l option causes the current crontab to be displayed on standard output.
The -r option causes the current crontab to be removed.
The -e option is used to edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. After you exit
from the editor, the modified crontab will be installed automatically.
SEE ALSO
crontab(5), cron(8)
FILES
/etc/cron.allow
/etc/cron.deny
STANDARDS
The crontab command conforms to IEEE Std1003.2-1992 (``POSIX''). This new command syntax differs from previous versions of Vixie Cron, as
well as from the classic SVR3 syntax.
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 29 December 1993 CRONTAB(1)