Learning and Sharing
  • Home
  • Blog
  • Linux
  • macOS
  • VirtualBox
  • VMware
  • Windows
  • Series
    • Symantec
    • Intune
    • Microsoft Azure
    • Powershell
    • VirtualBox
    • VMware
    • PowerShell Learning
    • Microsoft Graph
  • More
    • Auto Installation
    • AEC Installation
  • Contact
No Result
View All Result
  • Home
  • Blog
  • Linux
  • macOS
  • VirtualBox
  • VMware
  • Windows
  • Series
    • Symantec
    • Intune
    • Microsoft Azure
    • Powershell
    • VirtualBox
    • VMware
    • PowerShell Learning
    • Microsoft Graph
  • More
    • Auto Installation
    • AEC Installation
  • Contact
No Result
View All Result
No Result
View All Result

Create a Cron Job using Bash Script without the Interactive Editor

November 8, 2022
in Blog, Linux
0
ADVERTISEMENT

Table of Contents

Does crontab have an argument for creating cron jobs without using the editor crontab -e. If so, what would be the code create a cronjob from a bash script?

crontab -e

Run a command on boot

Run a command on boot: Below commands create a job runs the file vlmscd on startup.

command="@reboot cd /home/vlmcsd && sudo ./vlmcsd -R30d -L 0.0.0.0:1688 -l /home/vlmcsd.log"
echo $command | crontab -
  • : Create a variable $command to store the command.
  • : Prints the command in the variable.
  • : Adds the job into the crontab file.

Run the command crontab -l to verify it works.

# crontab -l
@reboot cd /home/vlmcsd && sudo ./vlmcsd -R30d -L 0.0.0.0:1688 -l /home/vlmcsd.log

Run a job with a schedule

Take a look about scheduling in cronjob. For example, cron expression means cron job will run every day at 9:00 AM. You can visit https://crontab.guru to creating and testing cron tab times or simply run this command man -s5 crontab

# ┌───────────── minute (0 - 59)
# │ ┌───────────── hour (0 - 23)
# │ │ ┌───────────── day of the month (1 - 31)
# │ │ │ ┌───────────── month (1 - 12)
# │ │ │ │ ┌───────────── day of the week (0 - 6) (Sunday to Saturday;
# │ │ │ │ │                                   7 is also Sunday on some systems)
# │ │ │ │ │
# │ │ │ │ │
# * * * * * <command to execute>

For example, run the command at 4:00 AM every day.

command="@reboot cd /home/vlmcsd && sudo ./vlmcsd -R30d -L 0.0.0.0:1688 -l /home/vlmcsd.log"
echo "0 4 * * * $command" | crontab -
# crontab -l
0 4 * * * @reboot cd /home/vlmcsd && sudo ./vlmcsd -R30d -L 0.0.0.0:1688 -l /home/vlmcsd.log
5/5 - (1 vote)
Previous Post

How to Fix OneDrive is Missing from the Windows Context Menu

Next Post

How to Fix Bad Day of the Month Error in Crontab in Linux

Related Posts

Ftr38

[WinForms] Creating GUIs in Windows PowerShell with WinForms

November 15, 2023
Ftr21

Converting DateTime Obtained from Microsoft Graph Call to PowerShell Date and Time Format

October 21, 2023
Ftr21

Translate Microsoft 365 License GUIDs to Product Names in PowerShell Microsoft Graph

October 19, 2023
Ftr21

How to Get an Access Token for Microsoft Graph PowerShell / API

November 27, 2023
Ftr21

Getting Access Token for Microsoft Graph

November 27, 2023
Ftr5

How to Copy Files without Changing Date Creation Time on Windows

November 27, 2023

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recent Posts

  • [WinForms] Creating GUIs in Windows PowerShell with WinForms
  • Converting DateTime Obtained from Microsoft Graph Call to PowerShell Date and Time Format
  • Translate Microsoft 365 License GUIDs to Product Names in PowerShell Microsoft Graph

Categories

Stay in Touch

Discord Server

Join the Discord server with the site members for all questions and discussions.

Telegram Community

Jump in Telegram server. Ask questions and discuss everything with the site members.

Youtube Channel

Watch more videos, learning and sharing with Leo ❤❤❤. Sharing to be better.

Newsletter

Join the movement and receive our weekly Tech related newsletter. It’s Free.

General

Microsoft Windows

Microsoft Office

VMware

VirtualBox

Technology

PowerShell

Microsoft 365

Microsoft Teams

Email Servers

Copyright 2023 © All rights Reserved. Design by Leo with ❤

No Result
View All Result
  • Home
  • Linux
  • Intune
  • macOS
  • VMware
  • VirtualBox
  • Powershell
  • Windows 10
  • Windows 11
  • Microsoft 365
  • Microsoft Azure
  • Microsoft Office
  • Active Directory