Dear fellows,
I have Centos 5.4 linux with DNS server, all logs are normal, in my /var/log/ btmp files is getting larger day by day.
What is this btmp file for?
How can i reduce the file siez or control file size.
Waiting.
MAZ (1 Reply)
Hi everyone ...
( Linux Cent OS ) i cant login as root user in my lab machine ... i did give correct root and root passwd ..but it showing Authentication Failed ...
plz help me (0 Replies)
I need to setup a proxy that will sit in front of a websockets server and proxy websockets communication both to and from the server. There will only be one specific client trying to access this server using the websockets protocol. We can configure the proxy settings for port and IP on the... (3 Replies)
Hello, when i tried to get whois on an .com domain, it automatically used tucows whois, it appears it cant connect that server, please how can i fix it, so it dont fail or use another server?
whois mydomainname.com -f
+ whoisout='
'
I have:
Linux * 2.6.18-348.3.1.el5.028stab106.2 #1... (5 Replies)
HI,
I have a Centos linux box and there is interface connect to internet.
I stop the iptables in this box .
After a few day , I find the linux box have been hacked and install some perl script into the box .
Could anyone tell me how the hacker can login into the centos box without knowing... (1 Reply)
Hi All,
I have a script that I need to schedule on daily basis. How can I schedule a script in centos. Like I want to run that script evryday at 10 AM and can I store the output of the script in a log file.
Thanks
---------- Post updated 04-18-14 at 12:52 AM ---------- Previous update... (0 Replies)
Will a program compiled in ubuntu 14.04 execute in Centos 7? That is to say a tarball or zip is downloaded from github and extracted, compiled, and make is all done in ubuntu 14.04, can I mv the program from ubuntu 14.04 to Centos 7, add it to path in Centos 7. And run it? Thank you :) (3 Replies)
Hi,
I need to know what kind of firewall settings does the linux box have? Is port 25 blocked in any way?
Linux techx 3.10.0-514.10.2.el7.x86_64 #1 SMP Fri Mar 3 00:04:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
I'm coming from this thread. (1 Reply)
Hi,
Apologies if this is not right section to post my requirement.
We have a requirement to enhance our Centos 7 Servers' security as per "CIS CentOS Linux 7 Benchmark" ( CIS WorkBench / Home ) that provides guidance for establishing a secure configuration posture for CentOS 7.
Just... (2 Replies)
Discussion started by: prvnrk
2 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)