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UNIX for Advanced & Expert Users
cron issue
Post 26946 by Kelam_Magnus on Monday 26th of August 2002 01:30:43 PM
08-26-2002
/agree Auswipe full path is always best
I must reluctantly agree with Auswipe. 
hehehe
It is a good practice and good security to ALWAYS use the full path in any cron entry and in the scripts that you write.
The reason for this is, it is a very easy way for someone to replace any binary on your system with a trojan.
Always use full path AND always keep a backup copy of crontab for all users that have one especially cron.
heheheIt is a good practice and good security to ALWAYS use the full path in any cron entry and in the scripts that you write.
The reason for this is, it is a very easy way for someone to replace any binary on your system with a trojan.
Always use full path AND always keep a backup copy of crontab for all users that have one especially cron.
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LEARN ABOUT SUSE
crontab
CRONTAB(1) General Commands Manual CRONTAB(1) NAME
crontab - maintain crontab files for individual users (ISC Cron V4.1) 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 ISC 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 cron.allow file exists, then you must be listed therein in order to be allowed to use this command. If the cron.allow file does not exist but the cron.deny file does exist, then you must not be listed in the cron.deny file in order to use this command. If neither of these files exists, only the super user will be allowed 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 <vixie@isc.org> 4th Berkeley Distribution 29 December 1993 CRONTAB(1)