Private Custom-linux System

Self-made Linux systems:

1. Partitioning and creating the file system

[Email protected] ~]# Fdisk/dev/sdb

Divided into two necessary partitions

/DEV/SDB1 corresponding/boot/dev/sdb2 corresponding to the root/

To create a file system:

[Email protected] ~]# mkfs.ext4/dev/sdb1[[email protected] ~]# MKFS.EXT4/DEV/SDB2

2. Create mount point and Mount Boot

[Email protected] ~]# mkdir/mnt/boot[[email protected] ~]# mount/dev/sdb1/mnt/boot

3. Install grub to generate grub files

[Email protected] ~]# Grub-install--root-directory=/mnt//dev/sdb

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4, Establish grub.conf:

[Email protected] ~]# vim/mnt/boot/grub/grub.conf

Default=0timeout=3title mylinux Root (hd0,0) kernel/vmlinuz-2.6.32-642.el6.x86_64 root=/dev/sda2 selinux=0 Init=/bi N/bash initrd/initramfs-2.6.32-642.el6.x86_64.img

5. Restore kernel and Initramfs files

[Email protected] ~]# cp/boot/vmlinuz-2.6.32-642.el6.x86_64/mnt/boot/[[email protected] ~]# cp/boot/ initramfs-2.6.32-642.el6.x86_64.img/mnt/boot/

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6. Create a level directory

[Email protected] ~]# mkdir/mnt/sysroot/[[email protected] ~]# mount/dev/sdb2/mnt/sysroot/

[Email protected] ~]# Mkdir–pv/mnt/sysroot/{etc,lib,lib64,bin,sbin,tmp,var,usr,sys,proc,opt,home,root,boot,dev, Mnt,media}

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7. Edit the Fstab file

[Email protected] ~]# Vim/mnt/sysroot/etc/fstab

/dev/sda1/boot ext4 Defaults 1 1/DEV/SDA2/EXT4 defaults 1 2

8. Copy bash, related commands and related library files

Because of the large number of files, one copy is more cumbersome, so it is recommended to use scripts to implement replication tasks.

[Email protected] ~]# vim copycmd.sh

#!/bin/bashch_root= "/mnt/sysroot" [ ! -d  $ch _root ] && mkdir  $ch _ Root bincopy ()  {    if which $1 &>/dev/null; then         local cmd_path= ' which --skip-alias $1 '          local bin_dir= ' dirname  $cmd _path '          [ -d ${ch_root}${bin_dir} ] | |  mkdir -p ${ch_root}${bin_dir}        [ -f ${ ch_root}${cmd_path} ] | |  cp  $cmd _path ${ch_root}${bin_dir}        return 0     else        echo  "command not  Found. "         return 1    fi  }  Libcopy ()  {     local lib_list=$ (ldd  ' which --skip-alias $1 '  | grep -Eo   '/[^[:space:]]+ ')     for loop in  $lib _list;do         local lib_dir= ' dirname  $loop '          [ -d ${ch_root}${lib_dir} ] | |  mkdir -p  ${ch_root}${lib_dir}        [ -f  ${ch_root}${loop} ] | |  cp  $loop  ${ch_root}${lib_dir}    done}read -p  "Please input  a command:  " commandwhile [ " $command  !=  "quit"  ];d o     if bincopy  $command  ;then         libcopy  $command     fi    read -p  "Please input  a command or quit:  " commanddone 

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9, now a know that Linux has been made to complete, it has a very simple function, but there is a need to add additional features later. Let's take a look at the boot.

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In this way, a simple small Linux has been made to complete, you can put it on a USB stick and other portable devices, can be used at any time, modify and so on ...

This article is from the "I ' m Groot" blog, so be sure to keep this source http://groot.blog.51cto.com/11448219/1853090

Private Custom-linux System