E Edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. After you exit from the editor, the modified crontab will be installed automatically. Crontab is the program used to install, deinstall or list the tables used to drive the cron daemon in Vixie Cron. Click here: to return to the 'Using the 'cron' scheduler' hint. When you save your changes it will then parse the crontab you have set up and warn you if there are any obvious errors in it. Man crontab man 5 crontab man vi [| #] Using an external text editor for crontab. Mac OS X Hints; iPhone Central. OS X and many flavors of *nix come with Crontab, an excellent program to run unattended jobs. This short tutorial should allow you to set up your own Crontab jobs. Create a script you wish to run. For this example, I am going to use the awstats.pl script to update my stats. The command to run the update is.
Click here to return to the 'Change the default UNIX editor' hint |
Try using the great freeware from BareBones Software, TextWrangler. Install the command line tool 'edit' and then set your $EDITOR to 'edit -w'. Now the shell will wait for you to close the file before it continues. Combine it with sudo to edit protected files.
Not good if you are connecting to your mac remotely though.As an aside, SubEthaEdit fans will appreciate see as a commine-line starter.
Isn't it funny when you have been doing this for such a long time that it never actually occured that others might be interested in this being posted as a hint :)
juggularity: Sweet! I've always seen BBEdit ask me about installing the CLI tools but never bothered to look into them.
encro: Yup..precisely why I wrote up the hint. It was one of those UNIX 101 things I learned back in the late-eighties that newbies really won't find on their own. :)
As a former tcsh user I've had to learn some of the ways of bash, so I pass along this hint about where to put those changes you make, especially for all users of one computer.
For bash users (default shell now in Tiger) you can set a variable, for example, for individual users in the '~/.bash_profile' hidden file in their home directoy, or for all users of the same computer in '/etc/profile'.
If you have a lot of users for each computer at your workplace or computer lab, then the /etc/profile save time.
Three examples of how add directories to your command path, and one plain ol' set variable:
export PATH=$PATH:/opt/local/bin
export PATH=/usr/local/mysql/bin:$PATH
PATH='${PATH}:/usr/local/rush/bin'; export PATH
export NR_FONT_PATH='/Volumes/VFX/Shake/nreal/fonts/'
---
Mat X -- VFX Mac Tech
I would like to use cron on my Mac. I choose it over launchd
, because I want to be able to use my new knowledge on Linux as well. However, I cannot seem to get the crontab -e
command to work. It fires up vim, I enter my test job:
But after saving and quitting (:wq
),
says:
What am I doing wrong?
kenorb10 Answers
Just follow these steps:
- In Terminal:
crontab -e
. - Press i to go into vim's insert mode.
Type your cron job, for example:
Press Esc to exit vim's insert mode.
- Type ZZ to exit vim (must be capital letters).
- You should see the following message:
crontab: installing new crontab
. You can verify the crontab file by usingcrontab -l
.
Note however that this might not work depending on the content of your ~/.vimrc
file.
I've never had this problem, but I create a ~/.crontab file and edit that (which allows me to back it up, Time Machine or otherwise), then run
Has worked for me for 20+ years across many flavors of unix.
Michael CampbellMichael CampbellNOTE: the answer that says to use the ZZ
command doesn't work for me on my Mavericks system, but this is probably due to something in my vim configuration because if I start with a pristine .vimrc
, the accepted answer works. My answer might work for you if the other solution doesn't.
On MacOS X, according to the crontab manpage, the crontab temporary file that gets created with crontab -e
needs to be edited in-place. Vim doesn't edit in-place by default (but it might do some special case to support crontab -e
), so if your $EDITOR
environment variable is set to vi
(the default) or vim
, editing the crontab will always fail.
To get Vim to edit the file in-place, you need to do:
That should enable you to update the crontab when you do crontab -e
with the :wq
or ZZ
commands.
You can add an autocommand in your .vimrc to make this automatically work when editing crontabs:
Another way is to add the setlocal nowritebackup
to ~/.vim/after/ftplugin/crontab.vim
, which will be loaded by Vim automatically when you're editing a crontab file if you have the Filetype plugin enabled. You can also check for the OS if you're using your vim files across multiple platforms:
The use of cron on OS X is discouraged. launchd
is used instead. Try man launchctl
to get started. You have to create special XML files that define your jobs and put them in a special place with certain permissions.
You'll usually just need to figure out launchctl load
Edit
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If you really do want to use cron on OS X, check out this answer: https://superuser.com/a/243944/2449
I did 2 things to solve this problem.
- I touched the crontab file, described in this linkcoderwall.com/p/ry9jwg (Thanks @Andy).
- Used Emacs instead of my default vim:
EDITOR = emacs crontab -e
(I have no idea why vim does not work)
crontab -l
now prints the cronjobs. Now I only need to figure out why the cronjobs are still not running ;-)
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mollerhojmollerhojHow To Use Crontab Editor
As has been mentioned cron is deprecated (but supported), and launchd is recommended for OS X.
This is taken from developer.apple.com
Effects of Sleeping and Powering Off
If the system is turned off or asleep, cron jobs do not execute; they will not run until the next designated time occurs.
If you schedule a launchd job by setting the StartCalendarInterval key and the computer is asleep when the job should have run, your job will run when the computer wakes up. However, if the machine is off when the job should have run, the job does not execute until the next designated time occurs.
All other launchd jobs are skipped when the computer is turned off or asleep; they will not run until the next designated time occurs.
Consequently, if the computer is always off at the job’s scheduled time, both cron jobs and launchd jobs never run. For example, if you always turn your computer off at night, a job scheduled to run at 1 A.M. will never be run.
In user crontab (crontab -e
) do not put the user field.
Correct cron is:
Syntax with user field is for /etc/crontab
only:
The error crontab: temp file must be edited in place
is because of the way vim treats backup files.
To use vim with cron, add the following lines in your .bash_profileexport EDITOR=vim
alias crontab='VIM_CRONTAB=true crontab'
Source the file:source .bash_profile
And then in your .vimrc add:if $VIM_CRONTAB 'true' set nobackup set nowritebackupendif
This will disable backups when using vim with cron. And you will be able to use crontab -e
to add/edit cronjobs.
On successfully saving your cronjob, you will see the message:crontab: installing new crontab
Source:
http://drawohara.com/post/6344279/crontab-temp-file-must-be-edited-in-placeenter link description here
As the previous posts didn't work for me because of some permissions issues, I found that creating a separate crontab file and adding it to the user's crontab with the -u parameter while root worked for me.
The above has a mix of correct answers. What worked for me for having the exact same errors are:
1) edit your bash config file
$ cd ~ && vim .bashrc
2) in your bash config file, make sure default editor is vim rather than vi (which causes the problem)
export EDITOR=vim
3) edit your vim config file
$cd ~ && vim .vimrc
4) make sure set backupcopy is yes in your .vimrc
Mac Os Cron
set backupcopy=yes
5) restart terminal
6) now try crontab edit
$ crontab -e
10 * * * * echo 'hello world'
You should see that it creates the crontab file correctly. If you exit vim (either ZZ or :wq) and list crontab with following command; you should see the new cron job. Hope this helps.
$ crontab -l
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