Bypass crontab?? Post: 303023443

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Top Forums UNIX for Beginners Questions & Answers Bypass crontab?? Post 303023443 by apmcd47 on Monday 17th of September 2018 04:40:38 AM

09-17-2018

Registered User

Quote:

Originally Posted by MuntyScrunt

The crontab is trying to run a graphical application, but it gets run before the desktop is initialised, therefore the app fails. At this point the boot process stops, there is no PATH, there are no os variables, there are no shares, no smb no cifs, no nothing.

This is also the case with ssh, so when I login I have the prompt, but the os is completely dumb. I have to know where every command is on disk, and I don't.

So surely the easiest way around this is to know where the offending crontab file is, nano/vim and sudo. Without Sudo I can't do anything.

The jumper sounds interesting, os is Jessie based, or at least Debian based. I'll look into that now. Thanks.

Try logging in with ssh and typing this into the command prompt

Code:

PATH=/bin:/sbin:/usr/bin:/usr/sbin
export PATH

You should then be able to type in the commands without their full path names.

Andrew

apmcd47

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LEARN ABOUT REDHAT

crond

CRON(8) 						      System Manager's Manual							   CRON(8)

NAME

       cron - daemon to execute scheduled commands (Vixie Cron)

SYNOPSIS

       cron

DESCRIPTION

       Cron should be started from /etc/rc or /etc/rc.local.  It will return immediately, so you don't need to start it with '&'.

       Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory.  Cron
       also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see  crontab(5)).	Cron  then
       wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute.  When execut-
       ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab,	if
       such exists).

       Additionally,  cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
       cron will then examine the modtime on all crontabs and reload those which have changed.	Thus cron need not be restarted whenever a crontab
       file is modified.  Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.

SEE ALSO

       crontab(1), crontab(5)

AUTHOR

       Paul Vixie <paul@vix.com>

4th Berkeley Distribution					 20 December 1993							   CRON(8)