Tag linux - What is Linux

linux

CentOS Linux 5.5 download

Wednesday, 01 September 2010 Administrator

CentOS Linux 5.5 download

Setup the ntpd.conf File

Edit /etc/ntpd.conf (suse) or /etc/ntp.conf (gentoo) to look like this:

restrict default noquery notrust nomodify
restrict 127.0.0.1
restrict 209.87.56.0 mask 255.255.255.0
restrict 209.87.57.31
server 209.87.57.30
restrict 142.58.103.1
server 142.58.103.1
driftfile /etc/ntp.drift
logfile /var/log/ntp.log

Installation

Gentoo

# emerge ntp -va
# rc-update add ntpd default
# /etc/init.d/ntpd start

DO NOT rc-update add ntp-client default don't do it!!!??

Suse

# chkconfig xntpd on
# /etc/init.d/xntpd start

For Firewall users

Add the following rule to iptables:

-A INPUT -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT

Check everything is running properly

# ntpdc

Then type in 'peers' to see if the ntpd can contact the ntp server correctly, and then type 'quit' to exit.

Locked Down ntpd.conf

If you are paranoid, use:

restrict default ignore
restrict 127.0.0.1
restrict 209.87.57.31
server 209.87.57.30
restrict 209.87.56.234
server 209.87.56.234
driftfile /etc/ntp.drift
logfile /var/log/ntp.log

How to automatic Backup cacti on linux

Wednesday, 21 October 2009 linux

[root@www www]# vi backup.sh

#/bin/bash

cd /var/www/

# Remove old backups

find /var/www/backups/* -mtime +5 -exec rm -fr {} \; > /dev/null 2>&1

# Remove old RRAs (usually means the datasource is deleted)

find /var/www/html/rra/* -mtime +2 -exec rm -fr {} \; > /dev/null 2>&1

# Create the filename for the backup

eval `date "+day=%d; month=%m; year=%Y"`

INSTFIL="cacti-backup-$year-$month-$day.tar.gz"

# Dump the MySQL Database

mysqldump -uroot --opt cacti> /var/www/html/cacti-backup.sql

mysqldump -uroot --opt syslog> /var/www/html/syslog.sql

# Gzip the whole folder

tar -Pcpzf /var/www/backups/$INSTFIL /var/www/html/*

# Remove the SQL Dump

rm -f /var/www/html/cacti-backup.sql

rm -f /var/www/html/syslog.sql

AMD CPUInfo 32-bit 2.2.0 for Linux download

Monday, 02 November 2009 linux

Processor and system information for computers using 32-bit AMD processors

AMD CPUInfo displays processor and system information for computers using AMD Athlon, Opteron, Phenom, Sempron, Duron and Turion processors.

Thw package contains RPMs for the following 32-bit Linux distributions:

- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
- openSUSE 10.2
- openSUSE 10.3
- SUSE Linux Enterprise Server 10

zip
[binary] [2.90 MB]

Adobe Flash Player for Linux 10.0.32.18

Monday, 02 November 2009 linux

Adobe Flash Player is a lightweight, robust runtime environment for rich media and rich Internet applications.

Adobe Flash Player is a lightweight, robust runtime environment for rich media and rich Internet applications.

Adobe Flash Player is the standard for delivering high-impact, rich Web content. Designs, animation, and application user interfaces are deployed immediately across all browsers and platforms, attracting and engaging users with a rich Web experience.

Installation:

1. Download the plugin to begin installation. A dialog box will appear asking you where to save the file.
2. Save the .tar.gz file to your desktop and wait for the file to download completely.
3. Quit your browser.
4. Remove all existing Adobe Flash Player installations from the system.
5. Unpackage the file. A directory with contains libflashplayer.so will be created.
6. Copy libflashplayer.so to ~/.mozilla/plugins. Create the 'plugins' folder if it does not exist yet.
7. Launch your brower. To verify installation in Firefox choose Help > About Plug-ins from the browser menu.

	tar.gz [binary] [3.83 MB]
	RedHat/Fedora/Mandriva/openSUSE RPM i386 [rh_rpm] [3.93 MB]
	Ubuntu/Debian DEB ALL [ubuntu_deb] [3.83 MB]

View login related logs on linux

Tuesday, 17 November 2009 linux

View login related logs

tail -f /var/log/secure
vi /var/log/secure
grep 'something' /var/log/secure

[root@hc168 ~]# tail -f /var/log/secure

Nov 16 15:28:56 hc168 sshd[28137]: Accepted password for yaobin from ::ffff:222.218.124.37 port 1273 ssh2

Nov 16 08:06:57 hc168 sshd[28945]: Accepted password for yaobin from ::ffff:202.103.221.74 port 1267 ssh2

Nov 16 16:06:57 hc168 sshd[28944]: Accepted password for yaobin from ::ffff:202.103.221.74 port 1267 ssh2

Nov 16 16:11:00 hc168 sshd[2942]: Accepted password for yaobin from ::ffff:113.16.191.187 port 52757 ssh2

Nov 17 00:11:00 hc168 sshd[2941]: Accepted password for yaobin from ::ffff:113.16.191.187 port 52757 ssh2

Nov 17 01:09:07 hc168 sshd[7976]: Accepted password for yaobin from ::ffff:202.103.221.74 port 3614 ssh2

Nov 17 09:09:07 hc168 sshd[7975]: Accepted password for yaobin from ::ffff:202.103.221.74 port 3614 ssh2

Nov 17 14:53:37 hc168 sshd[11487]: reverse mapping checking getaddrinfo for 183.129.218.222.broad.hc.gx.dynamic.163data.com.cn failed - POSSIBLE BREAKIN ATTEMPT!

Nov 17 06:53:39 hc168 sshd[11488]: Accepted password for yaobin from ::ffff:222.218.129.183 port 50180 ssh2

Nov 17 14:53:39 hc168 sshd[11487]: Accepted password for yaobin from ::ffff:222.218.129.183 port 50180 ssh2

Display all running process on linux

Sunday, 15 November 2009 linux

[root@hc168 ~]# ps aux

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND

root 1 0.0 0.0 3308 552 ? S Nov11 0:00 init [3]

root 2 0.0 0.0 0 0 ? SN Nov11 0:00 [ksoftirqd/0]

root 3 0.0 0.0 0 0 ? S< Nov11 0:00 [events/0]

root 4 0.0 0.0 0 0 ? S< Nov11 0:00 [khelper]

root 5 0.0 0.0 0 0 ? S< Nov11 0:00 [kacpid]

root 33 0.0 0.0 0 0 ? S< Nov11 0:00 [kblockd/0]

root 34 0.0 0.0 0 0 ? S Nov11 0:00 [khubd]

root 54 0.0 0.0 0 0 ? S< Nov11 0:00 [aio/0]

root 53 0.0 0.0 0 0 ? S Nov11 0:02 [kswapd0]

root 198 0.0 0.0 0 0 ? S Nov11 0:00 [kseriod]

root 309 0.0 0.0 0 0 ? S Nov11 0:00 [scsi_eh_0]

root 310 0.0 0.0 0 0 ? S Nov11 0:00 [percraid]

root 326 0.0 0.0 0 0 ? S Nov11 0:00 [kjournald]

root 1449 0.0 0.0 2372 456 ? S

~~root 1503 0.0 0.0 0 0 ? S Nov11 0:00 [shpchpd_event]~~

root 1559 0.0 0.0 0 0 ? S< Nov11 0:00 [kauditd]

root 1605 0.0 0.0 0 0 ? S< Nov11 0:00 [kmirrord]

root 1629 0.0 0.0 0 0 ? S Nov11 0:00 [kjournald]

root 1630 0.0 0.0 0 0 ? S Nov11 0:08 [kjournald]

root 1631 0.0 0.0 0 0 ? S Nov11 0:00 [kjournald]

root 1632 0.0 0.0 0 0 ? S Nov11 0:00 [kjournald]

root 1633 0.0 0.0 0 0 ? S Nov11 0:00 [kjournald]

[root@hc168 ~]# ps aux | grep process-name

[root@hc168 ~]# ps aux | grep httpd

root 3384 0.0 0.6 26444 14052 ? Ss Nov11 0:00 /usr/local/apache2.2/bin/httpd -k start

root 14207 0.0 0.0 2312 404 ? S 00:15 0:00 /usr/local/sbin/cronolog /var/log/httpd/bbs.hc365.com-error_log.%Y%m%d

root 14208 0.0 0.0 2268 404 ? S 00:15 0:00 /usr/local/sbin/cronolog /var/log/httpd/passport.hc555.com-error_log.%Y%m%d

root 14209 0.0 0.0 3216 408 ? S 00:15 0:00 /usr/local/sbin/cronolog /var/log/httpd/bbs.hc555.com-error_log.%Y%m%d

root 14210 0.0 0.0 3152 408 ? S 00:15 0:00 /usr/local/sbin/cronolog /var/log/httpd/help.soft30.com-error_log.%Y%m%d

Show who is logged on and what they are doing

Sunday, 15 November 2009 linux

who is logged on and what they are doing

[root@hc168 ~]# w

19:36:25 up 4 days, 2:08, 2 users, load average: 0.00, 0.00, 0.00

USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT

tyucdbin pts/0 212.113.221.74 Fri15 2days 0.09s 0.02s sshd: tyucdbin [priv]

tyucdbin pts/1 200.113.208.13 19:09 0.00s 0.03s 0.01s sshd: tyucdbin [priv]

[root@hc168 ~]# who

tyucdbin pts/0 Nov 13 15:04 (202.103.221.74)

tyucdbinn pts/1 Nov 15 19:09 (220.173.208.13)

Find out current Language on linux

Saturday, 14 November 2009 linux

Find out current Language:

set | egrep '^(LANG|LC_)'

output


LANG=zh_CN.UTF-8

Linux ftp Command

Thursday, 12 November 2009 linux

Linux ftp Command

NAME

ftp - Internet file transfer program

SYNOPSIS

ftp [-pinegvd ] [host ]

pftp [-inegvd ] [host ]

EXAMPLES

ftp abc.xyz.edu

This command will attempt to connect to the ftp server at abc.xyz.edu. If it succeeds, it will ask you to log in using a username and password. Public ftp servers often allow you to log in using the username "anonymous" and your email address as password. Once you are logged in you can get a list of the available ftp commands using the help function:

ftp> help

This lists the commands that you can use to show the directory contents, transfer files, and delete files.

ftp> ls

This command prints the names of the files and subdirectories in the current directory on the remote computer.

ftp> cd customers

This command changes the current directory to the subdirecotry "customers", if it exists.

ftp> cd ..

Changes the current directory to the parent direcotry.

ftp> lcd images

Changes the current directory on the local computer to "images", if it exists.

ftp> ascii

Changes to "ascii" mode for transferring text files.

ftp> binary

Changes to "binary" mode for transferring all files that are not text files.

ftp> get image1.jpg

Downloads the file image1.jpg from the remote computer to the local computer. Warning: If there already is file with the same name it will be overwritten.

ftp> put image2.jpg

Uploads the file image2.jpg from the local computer to the remote computer. Warning: If there already is file with the same name it will be overwritten.

ftp> !ls

A '!' in front will execute the specified command on the local computer. So '!ls' lists the file names and directory names of the current directory on the local computer.

ftp> mget *.jpg

With mget you can download multiple images. This command downloads all files that end with ".jgp".

ftp> mput *.jpg

Uploads all files that end with ".jgp".

ftp> mdelete *.jpg

Deletes all files that end with ".jgp".

ftp> prompt

Turns iteractive mode on or off so that commands on multiple files are executed without user confirmation.

ftp> quit

Exits the ftp program.

DESCRIPTION

Ftp is the user interface to the Internet standard File Transfer Protocol. The program allows a user to transfer files to and from a remote network site.

Options may be specified at the command line, or to the command interpreter.

«
Start
Prev
1
2
3
4
5
6
7
8
9
10
Next
End
»

CentOS Linux 5.5 download

HOW TO Setup NTPD on linux

Setup the ntpd.conf File

Installation

For Firewall users

Check everything is running properly

Locked Down ntpd.conf

How to automatic Backup cacti on linux

AMD CPUInfo 32-bit 2.2.0 for Linux download

Processor and system information for computers using 32-bit AMD processors

Adobe Flash Player for Linux 10.0.32.18

Adobe Flash Player is a lightweight, robust runtime environment for rich media and rich Internet applications.

View login related logs on linux

Display all running process on linux

Show who is logged on and what they are doing

who is logged on and what they are doing

Find out current Language on linux

Find out current Language:

Linux ftp Command

Latest News

Login Form

Latest Tags

Display News