How do you run a crontab in Cygwin on Windows?
Some cygwin commands are
.exe files, so you can run them with the standard Windows Scheduler, but others don't have an
.exe extension so can't be run from DOS (it seems like).
For example I want
updatedb to run nightly.
How do I make cron work?
You need to also install
cygrunsrv so you can set cron up as a windows service, then run
If you want the cron jobs to send email of any output you'll also need to install either
ssmtp (before running
/usr/share/doc/Cygwin/cron-*.README for more details.
Regarding programs without a
.exe extension, they are probably shell scripts of some type. If you look at the first line of the file you could see what program you need to use to run them (e.g., "
#!/bin/sh"), so you could perhaps execute them from the windows scheduler by calling the shell program (e.g., "
C:\cygwin\bin\sh.exe -l /my/cygwin/path/to/prog".)
Install Cygwin Cron Service on Windows Server, net start cron. I haven't used this cygwin feature before, so it feels weird knowing that crontab is running on my Windows system under cygwin. I haven't used this cygwin feature before, so it feels weird knowing that crontab is running on my Windows system under cygwin. An example Cygwin crontab entry. I don't have much in my Cygwin crontab yet, just one entry that runs a wget command to a certain URL every night. Here's the actual crontab entry, which actually calls a Bourne shell
You have two options:
Install cron as a windows service, using cygrunsrv:
cygrunsrv -I cron -p /usr/sbin/cron -a -n net start cron
Note, in (very) old versions of cron you need to use -D instead of -n
The 'non .exe' files are probably bash scripts, so you can run them via the windows scheduler by invoking bash to run the script, e.g.:
C:\cygwin\bin\bash.exe -l -c "./full-path/to/script.sh"
Cygwin and crontab, There are no errors in the windows event, cron or cygserver logs. Many resources on the internet insist to use cron-config instead of cygrunsrv -I cron -p To install and configure crontab in Cygwin, run below command. This is best method of configuring crond bcz, its most sensible to windows permissions. Below method make sure that your crond runs with proper privilege & access to drives.
Start the cygwin-setup and add the "cron" package from the "Admin" category.
We’ll run cron as a service by user SYSTEM. Poor SYSTEM therefore needs a home directory and a shell. The "/etc/passwd" file will define them.
$ mkdir /root $ chown SYSTEM:root /root $ mcedit /etc/passwd SYSTEM:*:......:/root:/bin/bash
The start the service:
$ cron-config Do you want to remove or reinstall it (yes/no) yes Do you want to install the cron daemon as a service? (yes/no) yes Enter the value of CYGWIN for the daemon: [ ] ntsec Do you want the cron daemon to run as yourself? (yes/no) no Do you want to start the cron daemon as a service now? (yes/no) yes
Local users can now define their scheduled tasks like this (crontab will start your favourite editor):
$ crontab -e # edit your user specific cron-table HOME=/home/foo PATH=/usr/local/bin:/usr/bin:/bin:$PATH # testing - one per line * * * * * touch ~/cron @reboot ~/foo.sh 45 11 * * * ~/lunch_message_to_mates.sh
Domain users: it does not work. Poor cron is unable to run scheduled tasks on behalf of domain users on the machine. But there is another way: cron also runs stuff found in the system level cron table in "/etc/crontab". So insert your suff there, so that SYSTEM does it on its own behalf:
$ touch /etc/crontab $ chown SYSTEM /etc/crontab $ mcedit /etc/crontab HOME=/root PATH=/usr/local/bin:/usr/bin:/bin:$PATH * * * * * SYSTEM touch ~/cron @reboot SYSTEM rm -f /tmp/.ssh*
Finally a few words about crontab entries. They are either environment settings or scheduled commands. As seen above, on Cygwin it’s best to create a usable PATH. Home dir and shell are normally taken from "/etc/passwd".
As to the columns of scheduled commands see the manual page.
If certain crontab entries do not run, the best diagnostic tool is this:
How to run cron service in cygwin?, To install and configure crontab in Cygwin, run below command. This is best method of configuring crond bcz, its most sensible to windows Start the cygwin-setup and add the “cron” package from the “Admin” category. We’ll run cron as a service by user SYSTEM. Poor SYSTEM therefore needs a home directory and a shell. The “/etc/passwd” file will define them.
Just wanted to add that the options to cron seem to have changed. Need to pass -n rather than -D.
cygrunsrv -I cron -p /usr/sbin/cron -a -n
Starting/configuring Crontab in Cygwin, Once you've got Cygwin setup properly on Windows, you can start installing Cron service on Windows. Here's the command to install new cron You can start and stop the cron service by using: Using the Windows Services Snap-in From a cmd window or run dialogue; 'net start cron' & 'net stop cron' Or, since you are setting this up in Cygwin; 'cygrunsrv --start cron' & 'cygrunsrv --start cron' To test the service,
Applied the instructions from this answer and it worked Just to point out a more copy paste like answer ( because cygwin installation procedure is kind of anti-copy-paste wise implemented ) Click WinLogo button , type cmd.exe , right click it , choose "Start As Administrator". In cmd prompt:
cd <directory_where_i_forgot_the setup-x86_64.exe> cygwin installer: set package_name=cygrunsrv cron setup-x86_64.exe -n -q -s http://cygwin.mirror.constant.com -P %package_name%
Ensure the installer does not throw any errors in the prompt ... If it has - you probably have some cygwin binaries running or you are not an Windows admin, or some freaky bug ...
Now in cmd promt:
C:\cygwin64\bin\cygrunsrv.exe -I cron -p /usr/sbin/cron -a -D
or whatever full file path you might have to the cygrunsrv.exe and start the cron as windows service in the cmd prompt
net start cron
Now in bash terminal run crontab -e
set up you cron entry an example bellow:
#sync my gdrive each 10th minute */10 * * * * /home/Yordan/sync_gdrive.sh # * * * * * command to be executed # - - - - - # | | | | | # | | | | +- - - - day of week (0 - 6) (Sunday=0) # | | | +- - - - - month (1 - 12) # | | +- - - - - - day of month (1 - 31) # | +- - - - - - - hour (0 - 23) # +--------------- minute
Setup Cygwin CRON service on Windows platform, Do you want to install the cron daemon as a service? yes; Enter the value Then open Windows Services, open the properties window of the I've run cygserver-config and cron-config. cygcheck -c | grep cron cron 4.1-65 OK cygrunsrv -Q cron Service : cron Current State : Running Controls Accepted : Stop Command : /usr/sbin/cron -n Windows recognized the service in the correct user context.
Cron on Cygwin, http://stackoverflow.com/questions/707184/how-do-you-run-a-crontab-in-cygwin-on-windows. You have two options: 1. Install cron as a How do you run a crontab in Cygwin on Windows? (5) Some cygwin commands are .exe files, so you can run them with the standard Windows Scheduler, but others don't have an .exe extension so can't be run from DOS (it seems like).
How to run a crontab, This document is a step-by-step instruction on how to install Cygwin and install and configure cron. Specifically to perform a weekly reboot of a Windows XP Installing and Updating Cygwin Packages. Installing and Updating Cygwin for 64-bit versions of Windows. Run setup-x86_64.exe any time you want to update or install a Cygwin package for 64-bit windows. The signature for setup-x86_64.exe can be used to verify the validity of this binary using this public key.
[PDF] Installation of Cygwin and cron on Windows XP, Some cygwin commands are .exe files, so you can run them with the standard Windows Scheduler, but others don't have an .exe extension so Cygwin Crontab not working, Setting up cygwin crontab Problem: Set up the Cygwin crontab on a Windows 7 PC, but now it will not run the crontab entries unless the user is logged into the PC. Analysis: Windows does not recognize the Cygwin BASH terminal server since it is not part of the Windows environment.