How? Brent is correct, a comment just means that there is a # in front of it. Run “vi /etc/crontab”, arrow down to each line you wish uncommented and press “x” to delete the #. If you make a mistake, press “u” to undo it.
How do you comment a cron job in UNIX?
How do I comment in cron job?
- Use a space to separate each field.
- Use a comma to separate multiple values.
- Use a hyphen to designate a range of values.
- Use an asterisk as a wildcard to include all possible values.
- Use a comment mark (#) at the beginning of a line to indicate a comment or a blank line.
Can you put comments in crontab?
Note that comments are not allowed on the same line as cron commands, since they are considered a part of the command. Similarly, comments are not allowed on the same line as environment variable settings.
How do you comment and uncomment in Linux?
You can “uncomment a line” in a configuration file by removing the # at the start of the line. Or, to “comment out” a line, add a # character to the start of the line. (Note that some languages have different comment formats, so this may not be true if you’re working with a source code file.)
How do you comment out code in Unix?
You can comment by placing a octothorpe # or a : (colon) at the start of the line, and then your comment. # can also go after some code on a line to add a comment on the same line as the code.
How do I restart a cron job?
Commands for RHEL/Fedora/CentOS/Scientific Linux user
- Start cron service. To start the cron service, use: /etc/init.d/crond start. …
- Stop cron service. To stop the cron service, use: /etc/init.d/crond stop. …
- Restart cron service. To restart the cron service, use: /etc/init.d/crond restart.
How do I view crontab?
Cron jobs are typically located in the spool directories. They are stored in tables called crontabs. You can find them in /var/spool/cron/crontabs. The tables contain the cron jobs for all users, except the root user.
How do I create multiple cron jobs?
FACT: you can run as many cron jobs from a single crontab file as you wish. FACT: you can also run different jobs as different users, each with their own crontab file. SUGGESTION: 1) Just debug what’s wrong with your second job.
What does crontab command do?
The crontab (abbreviation for “cron table”) is list of commands to execute the scheduled tasks at specific time. It allows the user to add, remove or modify the scheduled tasks.
How do I edit crontab?
How to Create or Edit a crontab File
- Create a new crontab file, or edit an existing file. $ crontab -e [ username ] …
- Add command lines to the crontab file. Follow the syntax described in Syntax of crontab File Entries. …
- Verify your crontab file changes. # crontab -l [ username ]
How do you comment multiple lines in Shell?
Commenting Multiple Lines
- First, press ESC.
- Go to the line from which you want to start commenting. …
- use the down arrow to select multiple lines that you want to comment.
- Now, press SHIFT + I to enable insert mode.
- Press # and it will add a comment to the first line.
How do you comment multiple lines?
To comment out multiple code lines right-click and select Source > Add Block Comment. ( CTRL+SHIFT+/ ) To uncomment multiple code lines right-click and select Source > Remove Block Comment. ( CTRL+SHIFT+ )
How do I comment multiple lines in Yaml?
yaml files), you can comment-out multiple lines by:
- selecting lines to be commented, and then.
- Ctrl + Shift + C.