IMO:
Comment: aagh! don't do that. No sed. No awk.
Use the crontab command only. Some people have used vi, but editor settings have the potential to render your whole crontab into garbage.
You can do what you want, of course, but if you keep on doing what you seem to be doing, keep lots of backups. And remember, if this is the root crontab you can break lots of other things accidentally.
Hi,
I would like to get rid of all comment in an xml file by grep or sed command:
The content seem like this:
<!-- ab cd
ef gh
ij kl -->
Anyone can help?
Thanks and Regards (3 Replies)
I'm trying to write a script to help automate some VERY tedious manual tasks.
I have groups of fairly large XML files (~3mb+) that I need to edit.
I need to look through the files and parse the XML looking for a certain flag contained in a field. If I find this flag (an integer value) I need... (4 Replies)
I am running a script remotely to do the following
1. Kill all processes by a user
2. Uninstall certain packages
3. FTP over a new file
4. Kill a ldap process that is not allowing my /devdsk/c0t0d0s7 slice to un-mount
5. Unmount /h
6. comment out the slice in vfstab
7. newfs the... (9 Replies)
Hi all,
I would want to remove all comments from my ruby/rails program. It may seem like a simple task, but it is not so. Because you need to have your tool implemented as like your language parser which is actually not so easy.
And am in the search of it, to remove comment from ruby/rails.... (4 Replies)
Again a comment removal requirement from me, refer my previous problem & solution for removing comment from ruby scripts: https://www.unix.com/shell-programming-scripting/118296-best-way-removing-comment-ruby-program.html
This time, it is for stripping of comments from Shell Script. I search for... (2 Replies)
I have around 25 hosts and each hosts has 4 instance of jboss and 4 different ip attached to it . I need to make some changes to the startup scripts. Any tips appreciated. I have total of 100 instances which bind to 100 different ip address based on instance name.
For example
File1
... (1 Reply)
My first comment on every file contains the license message. I want to replace with a new license message. I used the below sed script, which replaces all comments. What is the modification or any other method with awk script for the below to edit only the first comment(license message)?
#sed -f... (1 Reply)
I have tried a lot, Need your help guys.
SAS Program:
data one ; /* Data step */
Input name $; /*Dec variables*/
I want to remove the commented part(/* Data step */) alone. I have tried using sed command but it is deleting the entire line itself. i need unix command to separate this and... (6 Replies)
I am trying to comment out the crontab entries using sed.
I want to comment it out for a particular environment say '/mypath/scripts/'.
Using the full path as pattern, it is working. but using variable it is not working. i have tried double quotes too. but no luck!
$ crontab -l
... (3 Replies)
Dear Gurus,
I have a file which comes every day with set of data, as a part of processing i want to add a comment at the start of every line.
e.g of file
<PCL>
2E;"HCA";"COP Car A";"ODBS_CFG"
7C;"DD";"Doors Car D";"ODBS_CFG"
3D;"XA";"Auxiliary Car A";"ODBS_CFG"
3E;"XB";"Auxiliary... (12 Replies)
Discussion started by: guddu_12
12 Replies
LEARN ABOUT NETBSD
crontab
CRONTAB(1) BSD General Commands Manual CRONTAB(1)NAME
crontab -- maintain crontab files for individual users (ISC Cron V4.1)
SYNOPSIS
crontab [-u user]
crontab [-elr]
DESCRIPTION
crontab is the program used to install, deinstall, or list the tables used to drive the cron(8) daemon in ISC Cron. Each user can have their
own crontab, and though these are files in /var/cron, they are not intended to be edited directly.
If the /var/cron/allow file exists, then you must be listed therein in order to be allowed to use this command. If the /var/cron/allow file
does not exist but the /var/cron/deny file does exist, then you must not be listed in the /var/cron/deny file in order to use this command.
If neither of these files exists, depending on the compiled in settings, only the super user will be allowed to use this command, or everyone
will be allowed to use this command. On NetBSD everyone is allowed to use this command.
The default maximum size for a crontab is 256 kilobytes, but this may be changed for all users on the system by putting the desired maximum
size (in bytes) in the /var/cron/maxtabsize file.
If the -u option is given, it specifies the name of the user whose crontab is to be tweaked. If this option is not given, crontab examines
``your'' crontab, i.e., the crontab of the person executing the command. Note that su(1) can confuse crontab and that if you are running
inside of su(1) you should always use the -u option for safety's sake.
The first form of this command is used to install a new crontab from some named file or standard input if the pseudo-filename ``-'' is given.
The -l option causes the current crontab to be displayed on standard output.
The -r option causes the current crontab to be removed.
The -e option is used to 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.
FILES
/var/cron/allow Optional list of users that are allowed to use crontab.
/var/cron/deny Optional list of users that are disallowed to use crontab.
/var/cron/maxtabsize Maximum size of crontab files. Defaults to 256 kilobytes.
/var/cron/tabs/ Directory containing the individual user crontab files, named after the user.
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
SEE ALSO crontab(5), cron(8)STANDARDS
The crontab command conforms to IEEE Std 1003.2 (``POSIX.2''). This new command syntax differs from previous versions of Vixie Cron, as well
as from the classic Version 3 AT&T UNIX syntax.
AUTHORS
Paul Vixie <vixie@isc.org>
BSD May 6, 2010 BSD