Linux system setting script before 10 Gb of ORACLE Installation

In Linux, the script of the system before installing Oracle 10 Gb is the initial prototype. There is no logical relationship. Please use it with caution.

#! /Bin/bash
Cat>/etc/sysctl. conf <"EOF"
# Use for oracle
Kernel. shmall = 2097152
Kernel. shmmax = 2147483648
Kernel. shmmni = 4096
Kernel. sem = 250 32000 100 128
Fs. file-max = 65536
Net. ipv4.ip _ local_port_range = 1024 65000
Net. core. rmem_default = 262144
Net. core. rmem_max = 262144
Net. core. wmem_default = 262144
Net. core. wmem_max = 262144
EOF
/Sbin/sysctl-p
Cat>/etc/security/limits. conf <"EOF"
# Use for oracle
* Soft nproc 2047
* Hard nproc 16384
* Soft nofile 1024
* Hard nofile 65536
EOF
Echo "session required pam_limits.so">/etc/pam. d/login
Cat>/etc/profile <"EOF"
If [$ USER = "oracle"]; then
If [$ SHELL = "/bin/ksh"]; then
Ulimit-p 16384
Ulimit-n 65536
Else
Ulimit-u 16384-n 65536
Fi
Fi

Export ORACLE_BASE =/u01/app/oracle
Export ORACLE_SID = orcl
EOF
Mkdir-p/u01/app/oracle
Chown-R oracle: oinstall/u01/app/oracle
/Usr/sbin/groupadd oinstall
/Usr/sbin/groupadd dba
/Usr/sbin/useradd-m-g oinstall-G dba oracle
Passwd oracle