Miscellaneous 1

1. windows git Server installation

 Tool preparation ：
	Git-2.26.2-64-bit.exe
	Copssh_4.1.0_Installer.exe

1.  newly build git System users , Passwords never expire 
2.  normal setup Copssh and Git
3.  open Copssh Control panel , choice User->Add, Select the system user created above in the pop-up dialog box , Others keep the default values 
4.  If you don't need password free login in the future , Then the basic environment is completed 
5.  adopt git pull/push git@ip:/path/to/foo.git The following error occurred during command access ：
		git-upload-pack：command not found Or when the dynamic library does not find the symbol , It can be solved by the following methods 
	  find git Install under directory mingw64/bin Catalog , Copy all of it to copssh Install under directory bin Catalog ( notes ： Select skip when copying and replacing )

2. busybox compile

busybox-1.31.1.tar.bz2

1.  decompression tar jxvf busybox-1.31.1.tar.bz2
2. cd busybox-1.31.1
3. make defconfig|allyesconfig|allnoconfig,  Usually choose defconfig
4. make menuconfig Generated by the previous command .config File adjustment  ( notes ： The system needs libncurses5-devel (centos)|libncurses5-dev (ubuntu))
	4.1 Settings -> Build static binary (no shared libs)
	4.2 Settings -> (./_install) Destination path for 'make install'
5.  Choose what you need according to your requirements applet (vi, udhcpc. etc)
6.  perform make
7.  perform make install,  Will generate... In the current directory _install Catalog , The required busybox Put in _install/bin Directory 
8.  have access to busybox applet_name Execute the corresponding command in a way 

3. x86_64 new type initrd.img Extract and decompress

 adopt cpio Command to initrd Extract the file , But the contents of the directory after decompression are kernel/x86/microcode/AuthenticAMD.bin, Directories and files without root file system , Only one microcode file .
x86_64 The production method of root file system on the platform has changed , The root file system needs to be extracted in the following way .

1. ubuntu Can pass apt install binwalk install 
2.  perform binwalk initrd.img, Output is as follows 
DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             ASCII cpio archive (SVR4 with no CRC), file name: "kernel", file name length: "0x00000007", file size: "0x00000000"
120           0x78            ASCII cpio archive (SVR4 with no CRC), file name: "kernel/x86", file name length: "0x0000000B", file size: "0x00000000"
244           0xF4            ASCII cpio archive (SVR4 with no CRC), file name: "kernel/x86/microcode", file name length: "0x00000015", file size: "0x00000000"
376           0x178           ASCII cpio archive (SVR4 with no CRC), file name: "kernel/x86/microcode/.enuineIntel.align.0123456789abc", file name length: "0x00000036", file size: "0x00000000"
540           0x21C           ASCII cpio archive (SVR4 with no CRC), file name: "kernel/x86/microcode/GenuineIntel.bin", file name length: "0x00000026", file size: "0x002DC800"
3001008       0x2DCAB0        ASCII cpio archive (SVR4 with no CRC), file name: "TRAILER!!!", file name length: "0x0000000B", file size: "0x00000000"
3001344       0x2DCC00        gzip compressed data, from Unix, last modified: 2021-05-31 08:07:39
55517060      0x34F1F84       MySQL MISAM index file Version 6
3.  find gzip The file in img Offset in file , The above example is 3001344,  Use the following command to unzip 
	dd if=../initrd.img bs=3001344 skip=1 | zcat | cpio -id --no-absolute-filenames -v
	
	 notes ： If you pass binwalk The information to be viewed is in compressed format LZMA compressed data, You need to change the... In the above command zcat It is amended as follows lzcat