SHELL

how to edit crontab in linux

Step 1 : crontab -e
Step 2 : Select your prefered editor for the file.
Steo 3 : Add the command that you want to execute from cron and save that file.
		Example : 1 0 * * 0 rm /home/jones/*.log > /dev/null 2>&1
Step 4 : check if cron is activate using command
		crontab -l

change crontab editor

#run command in terminal:
select-editor

#Then select an option:
Select an editor.  To change later, run 'select-editor'.
  1. /bin/nano        <---- easiest
  2. /usr/bin/vim.tiny
  3. /bin/ed

Choose 1-3 [1]:

how to edit and save crontab in linux

crontab -e		# open user crontab in edit mode
i      			# for insert.  Make your changes
:wq!   			# quit and save
crontab -l		# open user crontab in read mode

linux edit crontab via script

(crontab -l 2>/dev/null; echo "*/5 * * * * /path/to/job -with args") | crontab -