30 20 ** 2 tar –cz /home/user1 > /home/user1/backup.tar.gz
Is it alright ?
Sigh...
RudiC has told you two times now to separate the two asterisks by a space. The line as you present it is still wrong because of that and no matter what options to tar you try will change anything about that BECAUSE THIS IS NOT THE PROBLEM IN FIRST PLACE!
Try a layered approach: first, consult the man pages of cron and learn how to configure a (any) command to be run by cron. Only then concern yourself with constructing the correct tar-command: first manually. When it finally does what you want it to do put it into cron using your new-found expertise on creating cron-jobs.
So much as a starter: cron jobs have NOT the same environment as commands run from an interactive session, namely the PATH variable is empty and therefore you should use full pathnames. instead of tar <cmd> /some/path you need to write something like /usr/bin/tar <cmd> /some/path. Notice the full path to the command. Your path might differ, but you can easily get the (on your system) correct path with the which command:
Is there a way I can check if a file is comppressed or not? (Be it tar/gzip or compress). trying to write a generic housekeeping scrit that will delete files over 6 months old and compress any uncompressed files if less than 6 months old. But not sure if there is a clever way to check except for... (4 Replies)
Are any of you guys aware of any problems when trying to sort compressed fields? Why I uncompress the file I am trying to sort, I have no problem sorting but when I try to sort compressed fields it doesnt work properly. I need to be able to sort these compressed fields. Any explanation why? (1 Reply)
Hi,
I have a file that has got compressed data. I would want to uncompress the packed decimal data(not the file). is there a way to do that in ksh? (6 Replies)
Hi
i have a filename.tar.bz2 and i have to parse it with a tool that doesn't support compressed files.
I have to do it for many big files, so i can't decompress and then process. I'd like to do something like:
tar -jxvf namefile.tar.bz2 | parsing_tool
i mean analyze it directly,... (4 Replies)
Hello all
I want to help
I have some compressed files on the system
When you want to unzip these files
Delete any file which symlink
"ln -s"
{{
I need script is necessary
Script contain:
Any operation to decompress the system is doing to delete any symlink... (0 Replies)
i have a file 4d7a94d0.bbb.1292
when i do
file 4d7a94d0.bbb.1292
the ouput is below
4d7a94d0.bbb.1292: gzip compressed data - deflate method
and i run this command
gunzip -c 4d7a94d0.bbb.1292 | awk '{gsub("\"","")}/I_ACCOUNT_ID/{print $2}' RS=":|;" FS=","
i get... (3 Replies)
I need UNIX scripts for polling, Uncompressing files and moving files between directory. Also trying to save file paths and any other variables in an independent file (.env) and use these at runtime by executing this file in the main script. (3 Replies)
Hi All,
Is there is any way to find the size of compressed file without doing decompression. The size should give the original uncompressed data size
Thanks
Arun (3 Replies)
Discussion started by: arunkumar_mca
3 Replies
LEARN ABOUT REDHAT
crontab
CRONTAB(1) General Commands Manual CRONTAB(1)NAME
crontab - maintain crontab files for individual users (V3)
SYNOPSIS
crontab [ -u user ] file
crontab [ -u user ] { -l | -r | -e }
DESCRIPTION
Crontab is the program used to install, deinstall or list the tables used to drive the cron(8) daemon in Vixie Cron. Each user can have
their own crontab, and though these are files in /var, they are not intended to be edited directly.
If the allow file exists, then you must be listed therein in order to be allowed to use this command. If the allow file does not exist but
the deny file does exist, then you must not be listed in the deny file in order to use this command. If neither of these files exists,
then depending on site-dependent configuration parameters, only the super user will be allowed to use this command, or all users will be
able to use this command.
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(8) can confuse crontab and that if you are running
inside of su(8) 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.
SEE ALSO crontab(5), cron(8)FILES
/etc/cron.allow
/etc/cron.deny
STANDARDS
The crontab command conforms to IEEE Std1003.2-1992 (``POSIX''). This new command syntax differs from previous versions of Vixie Cron, as
well as from the classic SVR3 syntax.
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 29 December 1993 CRONTAB(1)