Questions Tagged With crontab

Running bash file in sudo crontab seems to fail

twiggy — Sun, 03 Mar 2013 12:14:59 -0500

I am trying to run the script below in a crontab to keep my ip upto date.

#!/bin/bash

clear

echo "my ip form opendns: "
dig @208.67.222.220 myip.opendns.com +short `hostname`

echo "----------------------------- "
echo ""

myips=$(dig @208.67.222.220 myip.opendns.com +short `hostname`)

arryIP=(${myips// / })
echo "should have found my IP address now: ${arryIP[0]}"

echo " "
echo "updating home.houseofhawkins.com: "
echo "----------------------------------"
curl https://www.cloudflare.com/api_json.html \
  -d "a=rec_edit" \
  -d "tkn=mycode" \
  -d "id=myid" \
  -d "email=myemail" \
  -d "z=myzone" \
  -d "name=home" \
  -d "type=A" \
  -d "content=${arryIP[0]}" \
  -d "ttl=120"

echo "" echo "done updating home.houseofhawkins.com..."

if I do

. /home/me/updateIp.sh

This script will run successfully, but if I put this into a crontab it will always fail:

*/1 * * * * . /home/jon/updateIp.sh >> /home/jon/updateIpScript.log

the log file will have:

my ip form opendns:
86.180.163.89
67.215.65.132
-----------------------------

Not sure what is wrong

cronjob to run a command at first friday of each month

www_9px_ir — Thu, 04 Oct 2012 11:03:50 -0400

hi there
i use 3 13 1-7 * 5 in cron jobs to run my command at first friday of each month,
but i see that the command run on days 1 - 7 and also all fri day!
then i found below note in wikipedia:

if both "day of month" and "day of week" are restricted (not "*"), then either the "day of month" field (3) or the "day of week" field (5) must match the current day.

so, how i can solve the problem?

shell script of mysqldump works fine when run manually, but does not run in the cron job ?

saleemmsms — Wed, 29 Feb 2012 02:04:02 -0500

hi. i have a shell script to get a mysql db dump. this script works fine when run manually

#!/bin/sh
fqn=/home/Mysqluser/daily_dumps/bookstore_`date +%Y%m%d_%H%M%S`.sql.gz
mysqldump -u root -h localhost -pmysql#passwd bookstore | gzip > $fqn

but when i include this script to be run in cron job, it doesnt make the backup

this is what i included in the cron job

00 00 * * *  /home/Mysqluser/daily_dumps/bin/backup_database.sh

please explain what am i missing here.

Cron error mail not giving line number

yggen — Tue, 24 Jan 2012 06:47:38 -0500

After each run of cron'ed script i get:

cp: cannot stat <file>': No such file or directory cp: cannot statbackup.zip': No such file or directory

But it does not state what line the cp is issued from. This is not clear as there is allot of variables that is created to determine the files.....

thx in advanced

ygg

Tool for tracking user's usage of a Linux system

Andy — Thu, 10 Jun 2010 15:10:08 -0400

I am looking for a tool that monitors my system and informs me when a user logs in... someone attempts to login, etc. I know I can create a cron job to check "who" or "w" every so often but I was wondering if anyone was aware of a more proactive approach and/or tool.

I am unable to activate a cronjob at fedora linux.

Milind — Wed, 05 May 2010 11:24:06 -0400

I am having a simple cron job at my fedora linux i.e. to halt the machine at given time. But my cron job is not getting activated at all. Pl. guide me regarding this.

Regards.

Milind

mysqldump to crontab

S2eve — Tue, 27 Apr 2010 17:53:01 -0400

I try to set mysqldump to crontab but for some reason it's not working. maybe it's too long? I tried to put it in /etc/crontab and crontab -e mysqldump --default-character-set=utf8... how can i fix that?