0
votes
2answers
56 views

Why does this Shell script fail as cron job [on hold]

I have the following in a shell script, when I run this script it works but when I put this as a cron job it does not work(nothing happens!). How come? script #!/bin/bash ...
1
vote
0answers
38 views

Maintain screen session when executing shell script on boot

On Ubuntu 14.04, I have a crontab entry set to run on reboot: @reboot /root/start_server.sh And here's start_server.sh: screen -dmS server bash -c "cd server ; ./run.sh" When the system starts ...
1
vote
1answer
167 views

Reboot when no network connection does not work!

I have a Raspberry Pi that I use as a NAS for my local network. It works fine, but when I turn off the router to which the pi is connected, it permanently loses the connection. To be able to connect ...
1
vote
2answers
61 views

How to determine the newly closed file within a continuous audit log rotation?

I am attempting to find the best way to determine when the second file (of a matching criteria) is created. The context is an audit log rotation. Given a directory where audit logs are created every ...
3
votes
2answers
69 views

How to make Cron run

I am trying to set up cron to run the mysqlauditgrep command (its the MySQL 5.6 Utilities package). The mysqlauditgrep command is in bash. The command I am looking to run is: mysqlauditgrep ...
1
vote
1answer
71 views

How to set up Cron to run mysqlauditgrep command for 11AM on Friday

I am trying to set up cron to run the mysqlauditgrep command (its the MySQL 5.6 Utilities package). The mysqlauditgrep command is in bash. The command I am looking to run is: mysqlauditgrep ...
0
votes
2answers
46 views

Write log for a false statement of an if condition which returns exit 2

I have a script running every 5 mins with two exits in a condition clause. #!/bin/bash date=$(date +%Y) if [ $date -eq '2014' ] then echo "Current year is $date" exit 0 else echo "Current ...
2
votes
1answer
38 views

XML command line tool postgres

I have an XML files to read and load into database daily at night (cron) So i planed to do this in a batch. Is there any command line tool to : 1. Create a postgres schema using an XSD file? 2. ...
4
votes
1answer
180 views

BASH_ENV and cron jobs

I have several questions related to non-interactive, non-login shells and cron jobs. Q1. I have read that non-interactive, non-login shells only "load" $BASH_ENV. What does this exactly mean? Does ...
3
votes
2answers
1k views

Automating backups run from a bash script in Linux the right way

I have a bash script I wrote to backup a Moodle installation. It works fine, I've tested the backups, but there's a problem with it; when I do the backups, since I have to use sudo to type the ...
3
votes
5answers
1k views

bash restart mysql when it gone run well in SSH part, but not in cronjob

My system is centos 6.5, I write a simple bash shell to check if mysql is crashed, restart service again. I put it in /home/myspace/mysql.sh chown root:root /home/myspace/mysql.sh then run every ...
2
votes
2answers
198 views

Running cron.daily in parallel

Being able to put a script in /etc/cron.daily is really nice because I can do it easily from a configuration management system or a package. However, my understanding is that all the entries in ...
1
vote
0answers
33 views

Why am I not receiving any system e-mails? [closed]

In my crontab, I have the following: * * * * * sh /home/rimmer/test.sh In /home/rimmer/test.sh I have the following: #!/bin/bash echo 'test'; I have also set chmod +x /home/rimmer/test.sh, of ...
2
votes
3answers
2k views

Installing crontab using bash script

I have created a script to install two scripts on to the crontab. #!/bin/bash sudo crontab -l > mycron #echo new cron into cron file echo "*/05 * * * * bash ...
1
vote
1answer
173 views

Logrotate not picking up or acting on new configuration file

I had a logrotate configuration file set up for a log (let's call it Log1). It is working fine and the log is rotating everyday as expected. Yesterday I cloned this set up and modified it for three ...
1
vote
1answer
110 views

Debian, nonroot, cron, bash script and rebooting at specific time

As nonroot user, how can I schedule a reboot every day at 4:30am? 30 04 * * * /home/user/scripts/reboot.sh As a nonroot normal user, I'm sure the system won't allow me to use the reboot command. ...
1
vote
2answers
176 views

Neither crontab nor anacron is running, how to debug?

I'm running Arch ARM on a PogoPlug and want to execute a file every hour, the file when call directly runs fine (it is executable), for testing the file /etc/cron.hourly/crontest contains ...
2
votes
1answer
203 views

kill process in script while writing file behavior

in my php script which runs as a cron job, I have foreach($sites as $site) { exec('./wkhtmltoimage-amd64 ' . $site . ' somefile.png'); exec('./zopflipng -y somefile.png somefile.png'); } ...
3
votes
3answers
596 views

Bash script to delete a file called index.html recursively

I need a bash script (not sure how to write the actual .sh file) which I could set to be run by cron every minute and that would delete files with the name index.html that are in a specific directory ...
2
votes
1answer
1k views

“stdin: is not a tty” mails for running scripts as cron jobs

I have several shell scripts (bash) which are started by cron. Every time a script is executed I get an email saying "stdin: is not a tty". Can someone please tell me how to fix this? All scripts run ...
10
votes
7answers
6k views

How to restart the Python script automatically if it is killed or dies

I am running my Python script in the background in my Ubuntu machine (12.04) like this - nohup python testing.py > test.out & Now, it might be possible that at some stage my above Python ...
0
votes
2answers
276 views

How to add the logs to a crontab with time stamp [duplicate]

In crontab, I scheduled a daily backup script. Now when the cron executes the script the status are logged to a log file as shown below. 0 0 * * * /home/backup.sh > ...
3
votes
1answer
129 views

How to switch tty with a script / cronjob

Is it possible to switch the current tty/vt with the help of a bash script or a cronjob? I only know the physical keyboard input "Ctrl-Alt-Fx". I would like to show two virtual desktops at different ...
3
votes
2answers
216 views

Bash if script is called from terminal echo stdout to terminal, if from cron do not echo output

I would like to have a service watchdog script echo the status to the screen if called like ./watchdog.sh but if it is run by cron, there is no need to echo output. What is the proper method? Where ...
1
vote
3answers
617 views

cron: bash syntax not working

I am trying to add following command to crontab: I=1; for X in $(/bin/ls -r /var/tmp/*); do [ $((I++)) -le 28 ] && echo "lower" || echo "higher"; done When executed on the command line (in ...
2
votes
2answers
790 views

Need help with a script to test for memory usage

I'm trying to put up a temporary band-aid while I work out a solution for a app's memory leak. What I wrote was a small bash script that I put in the root on the server. This is what the script is ...
1
vote
1answer
161 views

Launch 2 celery processes via cron

I'm trying to chain some commands to periodically check/launch two processes via cron (I'm on a shared host, can't change things around). After a lot of googling around, all the things I've done don't ...
1
vote
1answer
589 views

Cron automated bash script to run run 1 bash script then another, plus integrity check

So I have a custom in-house app developed by a 3rd party. When the app is running, I can verify it is running with the "screen -ls" command. As long as screens are running for rails and freeswitch ...
3
votes
2answers
460 views

Cron jobs and mail notification

I have (from one tutorial) cron job which make weekly backup on my website and is working fine. #!/bin/bash NOW=$(date +"%Y-%m-%d-%H%M") FILE="mysite.com.$NOW.tar" BACKUP_DIR="/home/user/backups/" ...
0
votes
2answers
191 views

Linux 'mail' command: Can't open display

I've just installed the 'mail' command in Ubuntu (mailutils package) in order to view feedback from cron jobs. I type 'mail' at the prompt and see something like this: "/var/mail/*$USER*": 1 message ...
3
votes
2answers
424 views

Automatic Update Script using Cron, Exit Codes, and Logging

I'm managing multiple machines running Debian, Raspian, and Mint. On some of the machines I want to have updating and upgrading automatically. I've drafted a script that I want to do this and log if ...
2
votes
1answer
300 views

bash script - supervisor program

I have to write a shell-script that have to do the following tasks: -in every 5 seconds it saves:     -how many users are using joe and/or vi;     -if ...
2
votes
2answers
277 views

Strange crontab-script interaction (bash)

I'm running Ubuntu 12.04 and bash. I've written a pair of shell scripts that allow me to set an alarm which, after ringing, unsets itself. The first, alarmset, allows me to enter a time and modifies ...
7
votes
2answers
5k views

cron ignores variables defined in “.bashrc” and “.bash_profile”

I have defined "SHELL" variable in /etc/crontab file: [martin@martin ~]$ grep SHELL /etc/crontab SHELL=/usr/local/bin/bash [martin@martin ~]$ file /usr/local/bin/bash /usr/local/bin/bash: ELF 32-bit ...
2
votes
1answer
2k views

Users home path in a bash script

I'm writing a bash-script that will be run as a cron job everyday. Very basic, I was wanting to change the wallpaper daily. I have mint-14 with mate. The thing I'm getting caught up on right now ...
4
votes
1answer
200 views

Where is the cron timer

Is there any way to access the cron timers and get the seconds left until the next execution of scripts in the crontab or maybe the seconds since the last?
0
votes
1answer
210 views

ipset not executing from crontab

I have this txt files that contains IPs, one per line of file, that I want to block using ipset. I have this bash script that essentially reads from the plain txt file and constructs an array. Then ...
0
votes
1answer
254 views

How can I check if a file is being downloaded?

I have a Raspberry Pi which I want to use to automate downloads to a network drive. I would like to restart the machine on a regular basis using cron (I've heard they're not the most stable of ...
0
votes
1answer
119 views

run-parts ignores jobs.deny

I use run-parts to run all scripts under a directory,the same way crontab does. But the jobs deny and jobs allow don't block any of the scripts in the directory. rajeevs@rajeev:/home/rajeevs/test$: ...
4
votes
2answers
917 views

Have cron email output to MAILTO based on exit status

I have a cron job running a php command like this: php /path/to/script.php > dev/null This should send only STDERR output to the MAILTO address. From what I gather the php script is not ...
1
vote
2answers
3k views

how do I run a cron job with a specific user?

My cron and scripting skills are very poor, but I need to run a job every 5 minutes by user 'cpc'. So I created a script and left it at /root. My crontab -e entry about it is: 0-59/5 * * * * ...
10
votes
1answer
18k views

How to redirect output to a file from within cron?

I have a backup script which I need to run at a particular time of a day so I am using cron for this task and from within cron am also trying to redirect the output of backup script to a logfile. ...
2
votes
3answers
2k views

Conditional crontab command in bash script

How do I invoke a crontab command so that I can schedule to run a script with a 20 minute delay based on some condition? Edit: What if I wanted a command that schedules a script to be executed only ...
5
votes
5answers
3k views

Check if script is started by cron, rather than invoked manually

Is there any variable that cron set when it's running a program ? If the script is running by cron, I'll skip some parts; otherwise invoke those parts. How can I know if the bash script is started by ...
3
votes
2answers
2k views

Bash script doesn't work as cronjob

I'm trying to get this simple bash script to work within a cronjob. It's used to generate static nginx webserver statistic pages using GoAccess. I tried everything I know to resolve this issue, it ...
4
votes
3answers
1k views

In linux, would it be possible to run a script every day 3 minutes later than the previous day?

My first solution to this was to execute date +%Y%m%d%H%M and put that format of numbers into a file, and run the script every minute from cron. Then if the date from the file matches the date ...
5
votes
1answer
499 views

Run script when specific users logout

I need to run my application in screen when specific users are logged out and kill the screen when someone from my user list logged in. So I am thinking about bash script, which will be called ...
1
vote
2answers
322 views

need portable crontab host-checking/failover logic across Linux & Cygwin

A host-ping test that always works correctly from the interactive bash command line in Cygwin, is behaving incorrectly in its own crontab--always selecting the second host--and I can't figure out why: ...
1
vote
1answer
327 views

How to create a cron which finds/kills/clears old puppet runs?

I am a new user of bash/cron, and I was given a task to create a cron which finds/kill/ and clears old puppet runs that were not successfully installed. The more help the better, but I am more or less ...
1
vote
1answer
660 views

grep searchstring /etc/crontab strange behavior in BASH script

I am working on a BASH script which creates automated backups via the crontab. I am trying to use myVARIABLE=`grep backup /etc/crontab` to return lines containing "backup" if an entry has already ...