Asked by: Philipe Rustichelli
technology and computing operating systems

How do I comment out a cron entry?

Syntax of crontab File Entries
  1. Use a space to separate each field.
  2. Use a comma to separate multiple values.
  3. Use a hyphen to designate a range of values.
  4. Use an asterisk as a wildcard to include all possible values.
  5. Use a comment mark (#) at the beginning of a line to indicate a comment or a blank line.

Thereof, how do I comment a cron entry?

Syntax of crontab File Entries

  1. Use a space to separate each field.
  2. Use a comma to separate multiple values.
  3. Use a hyphen to designate a range of values.
  4. Use an asterisk as a wildcard to include all possible values.
  5. Use a comment mark (#) at the beginning of a line to indicate a comment or a blank line.

Furthermore, how do I stop a cron job from running? To stop the cron from running, kill the command by referencing the PID. Returning to the command output, the second column from the left is the PID 6876. You may now run the ps ufx | grep cron command to confirm the Magento cron job is no longer running.

In this way, can you comment out crontab?

daily directory that contains the script that does the daily backup, so the entry in crontab is indeed commented out and is not actuated.

Do I need to restart crontab after editing?

No you don't have to restart cron , it will notice the changes to your crontab files (either /etc/crontab or a users crontab file). # /etc/crontab: system-wide crontab # Unlike any other crontab you don't have to run the `crontab' # command to install the new version when you edit this file # and files in /etc/cron. d.

Related Question Answers

Gisselle Kalabukhov


Where is the crontab file?

Users crontab files are stored by the user's name, and their location varies by operating systems. In Red Hat based system such as CentOS, crontab files are stored in the /var/spool/cron directory while on Debian and Ubuntu files are stored in the /var/spool/cron/crontabs directory.

Yevhen Greifsmuhlen


How do I edit crontab?

You do not need to become superuser to edit your own crontab file.
  1. Create a new crontab file, or edit an existing file. $ crontab -e [ username ]
  2. Add command lines to the crontab file. Follow the syntax described in Syntax of crontab File Entries.
  3. Verify your crontab file changes. # crontab -l [ username ]

Chunhua Heitl


What is the use of crontab in Linux?

Overview. The crontab command is used to view or edit the table of commands to be run by cron. Each user on your system can have a personal crontab. Crontab files are located in /var/spool/ (or a subdirectory such as /var/spool/cron/crontabs), but they are not intended to be edited directly.

Mao Careaga


How do I open a crontab file in Linux?

Opening Crontab
First, open a terminal window from your Linux desktop's applications menu. You can click the Dash icon, type Terminal and press Enter to open one if you're using Ubuntu. Use the crontab -e command to open your user account's crontab file. Commands in this file run with your user account's permissions.

Jonnatan Señas


What is Cron and who can use it?

The software utility cron is a time-based job scheduler in Unix-like computer operating systems. Users that set up and maintain software environments use cron to schedule jobs (commands or shell scripts) to run periodically at fixed times, dates, or intervals.

Abdelaziz Walterscheid


How do I know if my cron job is running?

log file, which is in the /var/log folder. Looking at the output, you will see the date and time the cron job has run. This is followed by the server name, cron ID, the cPanel username, and the command that ran. At the end of the command, you will see the name of the script.

Sidahmed Villaverde


How do I know if crontab is running?

To check to see if the cron daemon is running, search the running processes with the ps command. The cron daemon's command will show up in the output as crond. The entry in this output for grep crond can be ignored but the other entry for crond can be seen running as root. This shows that the cron daemon is running.

Allah Vakitchev


How do I list all cron jobs?

  1. Cron is a Linux utility for scheduling scripts and commands.
  2. To list all scheduled cron jobs for the current user, enter: crontab –l.
  3. To list hourly cron jobs enter the following in the terminal window: ls –la /etc/cron.hourly.
  4. To list daily cron jobs, enter the command: ls –la /etc/cron.daily.

Georgieva Kettelake


How do you kill a process?

To kill a process use the kill command. Use the ps command if you need to find the PID of a process. Always try to kill a process with a simple kill command. This is the cleanest way to kill a process and has the same effect as cancelling a process.

Baptista Hil


How do you kill a process using PID?

To kill a process using its PID, enter the “killall” command (without the quotes) at the prompt, followed by a space, and then the corresponding PID from the generated list. Press Enter. Killing a process using its PID does not always work. If it doesn't work for you, you can use the process name to kill the process.

Argentina Ces


How do I turn off Cron in Magento 2?

To remove the Magento crontab:
  1. Log in as, or switch to, the Magento file system owner in the terminal.
  2. Change to your Magento installation directory: cd <your Magento install dir>/
  3. Enter the following command: php bin/magento cron:remove.

Terrence Goebels


How do I start and stop a cron job in Linux?

If you are using Redhat/Fedora/CentOS Linux login as root and use the following commands.
  1. Start cron service. To start cron service, enter: # /etc/init.d/crond start.
  2. Stop cron service. To stop cron service, enter: # /etc/init.d/crond stop.
  3. Restart cron service.
  4. Start cron service.
  5. Stop cron service.
  6. Restart cron service.

Mitra Krief


What is Crond Linux?

The crond daemon is the background service that enables cron functionality. The cron service checks for files in the /var/spool/cron and /etc/cron. d directories and the /etc/anacrontab file. The contents of these files define cron jobs that are to be run at various intervals.

Kieth Baurmeister


How do I save a crontab file?

It can be a little confusing and scary the first time you use it, so here's what to do:
  1. press esc.
  2. press i (for "insert") to begin editing the file.
  3. paste the cron command in the file.
  4. press esc again to exit editing mode.
  5. type :wq to save ( w - write) and exit ( q - quit) the file.