Linux init script

The following script is used for initialization scripts for Linux systems and can be executed immediately after the server system is installed. The script combined with some of Daniel's parameters, has been passed under CentOS 5.
How to use: Copy it and save it as a shell file, such as init.sh. Upload it to the Linux server and execute SH init.sh. We recommend that you execute the system immediately after installation.
Script code:

#!/bin/bash

# Configure Yum Source

Cd/tmp

Wget-c http://yum.baseurl.org/download/3.4/yum-3.4.3.tar.gz

Tar zxf yum-3.4.3.tar.gz

CD yum-3.4.3

./yummain.py Install Yum-y

Cd..

RM-RF yum-3.4.3*

Sed-i ' [email protected]^[email protected]#[email protected] '/etc/yum.conf

Yum Clean All

Yum Check-update

mv/etc/yum.repos.d/centos-debuginfo.repo/etc/yum.repos.d/centos-debuginfo.repo$ (Date +%m%d)

mv/etc/yum.repos.d/centos-media.repo/etc/yum.repos.d/centos-media.repo$ (Date +%m%d)

mv/etc/yum.repos.d/centos-vault.repo/etc/yum.repos.d/centos-vault.repo$ (Date +%m%d)

# Remove Obsolete RPM Package

If [-Z] $ (cat/etc/redhat-release | grep ' 5\. '); Then

Yum-y groupremove "FTP server" "Text-based Internet" "Windows File Server" "PostgreSQL Database" "News Server" "MySQL Dat Abase "" DNS Name Server "Web server" "Dialup Networking Support" "Mail Server" "Ruby" "office/productivity" "Sound and Vi Deo "x Window System" "X Software Development" "Printing support" "OpenFabrics Enterprise Distribution"

Else

Yum-y groupremove "FTP server" "PostgreSQL database Client" "PostgreSQL database Server" "MySQL database Server" "MySQL D Atabase client "Web Server" "Office Suite and Productivity" "Ruby support" "X Window System" "Printing Client" "desktop*"

Fi

# Update RPM Package

Yum-y Update

# Install Dependencies Package

Yum-y install gcc gcc-c++ make autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2 -devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel Curl Curl-devel E2fspro GS e2fsprogs-devel krb5-devel libidn libidn-devel OpenSSL openssl-devel nss_ldap openldap Openldap-devel Openldap-clients openldap-servers libxslt-devel libevent-devel ntp libtool Libtool-ltdl Bison gd-devel vim-enhanced Pcre-devel Zip unzip SendMail

Chkconfig--list | awk ' {print ' Chkconfig "$" Off "} ' >/tmp/chkconfiglist.sh;/bin/sh/tmp/chkconfiglist.sh;rm-rf/tmp/ chkconfiglist.sh

Chkconfig Crond on

Chkconfig irqbalance on

Chkconfig Network on

Chkconfig sshd on

Chkconfig Rsyslog on #CentOS 6

Chkconfig syslog on #CentOS/rhel 5

Chkconfig iptables on

Chkconfig SendMail on

Service SendMail Restart

#/etc/hosts

["$ (hostname-i)"! = "127.0.0.1"] && sed-i "[Email protected]^127.0.0.1\ (. *\) @127.0.0.1 ' hostname ' \[email PR Otected] "/etc/hosts

# Close SELINUX

Setenforce 0

Sed-i ' s/^selinux=.*$/selinux=disabled/'/etc/selinux/config

# Initdefault

Sed-i ' s/^id:.*$/id:3:initdefault:/'/etc/inittab

/sbin/init Q

# PS1

Echo ' ps1= ' \[\e[37;40m\][\[\e[32;40m\]\u\[\e[37;40m\]@\h \[\e[35;40m\]\w\[\e[0m\]]\\$ \[\e[33;40m\] "' >>/etc /profile

# Record Command

Sed-i ' S/^histsize=.*$/histsize=100/'/etc/profile

echo "Export prompt_command=" {msg=\$ (History 1 | {read x y; echo \ $y;}); user=\$ (WhoAmI); echo \$ (date \ "+%y-%m-%d%h:%m:%s\"): \ $user: \ ' pwd\ '/:\ $msg----\$ (who am I); } >>/tmp/\ ' hostname\ '. \ ' whoami\ '. History-timestamp ' ">>/root/.bash_profile

# wrong password five times locked 180s

Sed-i ' 4a auth required pam_tally2.so deny=5 unlock_time=180 '/etc/pam.d/system-auth

# alias VI

sed "[email protected] mv=.* @alias mv= ' mv-i ' \nalias [email protected]"/ROOT/.BASHRC

echo ' syntax on ' >>/ETC/VIMRC

#/etc/security/limits.conf

Cat >>/etc/security/limits.conf <<eof

* Soft Nproc 65535

* Hard Nproc 65535

* Soft Nofile 65535

* Hard Nofile 65535

Eof

echo "Ulimit-sh 65535" >>/etc/rc.local

#/etc/sysctl.conf

Sed-i ' s/net.ipv4.tcp_syncookies.*$/net.ipv4.tcp_syncookies = 1/g '/etc/sysctl.conf

Cat >>/etc/sysctl.conf << EOF

fs.file-max=65535

Net.ipv4.tcp_tw_reuse = 1

Net.ipv4.tcp_tw_recycle = 1

Net.ipv4.ip_local_port_range = 1024 65000

Eof

Sysctl-p

If [-Z] $ (cat/etc/redhat-release | grep ' 6\. '); Then

Sed-i ' s/3:2345:respawn/#3:2345:respawn/g '/etc/inittab

Sed-i ' s/4:2345:respawn/#4:2345:respawn/g '/etc/inittab

Sed-i ' s/5:2345:respawn/#5:2345:respawn/g '/etc/inittab

Sed-i ' s/6:2345:respawn/#6:2345:respawn/g '/etc/inittab

Sed-i ' s/ca::ctrlaltdel/#ca:: ctrlaltdel/g '/etc/inittab

Sed-i ' [email protected]=.*[email protected]= ' en_US. UTF-8 "@g '/etc/sysconfig/i18n

Else

Sed-i ' [email protected]^[email protected]#[email protected] '/etc/init/control-alt-delete.conf

Fi

/sbin/init Q

# Set TimeZone

Rm-rf/etc/localtime

Ln-s/usr/share/zoneinfo/asia/shanghai/etc/localtime

# Update Time

Echo ' */5 * * * * */usr/sbin/ntpdate pool.ntp.org >/dev/null 2>&1 ' >/var/spool/cron/root;chmod 600/var/spoo L/cron/root

/sbin/service Crond Restart

# iptables

Cat >/etc/sysconfig/iptables << EOF

# Firewall configuration written by System-config-securitylevel

# Manual Customization of this file are not recommended.

*filter

: INPUT DROP [0:0]

: FORWARD ACCEPT [0:0]

: OUTPUT ACCEPT [0:0]

: Syn-flood-[0:0]

-A input-i lo-j ACCEPT

-A input-m state--state related,established-j ACCEPT

-A input-p tcp-m state--state new-m TCP--dport 22-j ACCEPT

-A input-p tcp-m state--state new-m TCP--dport 80-j ACCEPT

-A input-p icmp-m limit--limit 100/sec--limit-burst 100-j ACCEPT

-A input-p icmp-m limit--limit 1/s--limit-burst 10-j ACCEPT

-A input-p tcp-m tcp--tcp-flags fin,syn,rst,ack syn-j Syn-flood

-A input-j REJECT--reject-with icmp-host-prohibited

-A syn-flood-p tcp-m limit--limit 3/sec--limit-burst 6-j RETURN

-A syn-flood-j REJECT--reject-with icmp-port-unreachable

COMMIT

Eof

/sbin/service iptables Restart

Source/etc/profile

# # #install Tmux

mkdir Tmux

CD Tmux

Wget-c http://downloads.sourceforge.net/tmux/tmux-1.8.tar.gz

Tar xzf libevent-2.0.21-stable.tar.gz

CD libevent-2.0.21-stable

./configure

Make && make install

Cd.. /

Tar xzf tmux-1.8.tar.gz

CD tmux-1.8

cflags= "-i/usr/local/include" ldflags= "-l//usr/local/lib"./configure

Make && make install

Cd.. /.. /

RM-RF Tmux

If [' getconf word_bit ' = ' + '] && [' getconf long_bit ' = ' 64 ']; Then

Ln-s/usr/local/lib/libevent-2.0.so.5/usr/lib64/libevent-2.0.so.5

Else

Ln-s/usr/local/lib/libevent-2.0.so.5/usr/lib/libevent-2.0.so.5

Fi

# # #install Htop

mkdir Htop

CD Htop

Tar xzf htop-1.0.2.tar.gz

CD htop-1.0.2

./configure

Make && make install

Cd.. /.. /

RM-RF Htop