1.2 Learn shell and documents handling
1.2.1 Shell
https://qiita.com/zayarwinttun/items/0dae4cb66d8f4bd2a337 Basics for Shell script beginners
https://jehupc.exblog.jp/15729095/ the differences between connector character(; & && ||)
#shell list bulid my own. upload in time.
ab.sh #afterboot <linked ss.sh #sshdsafe bw.sh #basicwebserver aw.sh #advancewebserver
#shell scripts
bash < +.sh na
#shebang
!/bin/bash
#loop
for f in ./*
do
echo $f
done
#citation
$# counts $0 script name $1 option…
#return code status
echo $?
#tar command options
f ile name
v erbose
c reate
x extract
t arget
z gz
i bz2
j xz
1.2.2 Editor VIM
http://www.vim.org/ Vim
http://hp.vector.co.jp/authors/VA016670/unix/vi_reference.html vi commands(jp)
http://sci.notbc.org/~weiss/resources/vim/Vim-course/others/vim-1.0.pdf Vim Tutorial and Reference PDF
VIM is a text editor. You have to learn it to manage the server on CLI(command-line interface).
#note
Before you type commands, you should learn VIM usage. The PDF link above will be helpful for your learning.
Try to type “vi”; you can get minimum help.
You should know these commands like ,i,a,,h,j,k,l,x,u,+R,U,ZZ,G,:q,:q!:wq!,yy,dd,p,o,O,w,b,$,,f,t,/,\,n,?
e.g.
#vi command: enter [i] and move the cursor to target and hit key your number
#[ESC] then type <:wq> if you make miss, you can recover hit [ESC][u]
#learn how to use vim at vim tutor.
###option config### cd vi .vimrc #---.vimrc------- set nocompatible set fileformats=unix,dos syntax on set autoindent set history=50 set number set list set showmatch highlight Comment ctermfg=LightCyan set wrap set shiftwidth=4 #----------------end
1.2.3 Sed
https://www.gnu.org/software/sed/manual/sed.html
https://sed.open-code.club/
https://qiita.com/hirohiro77/items/7fe2f68781c41777e507 how to use ‘sed’
#tips
Stream editor is Sed.
#e.g.
sed -i -e 's/<..full text ..(.*)>/<..replace text..>/g' <..distination file..> -i inplace -e expression script s reguler expression g copy hold to pattern
#add line top of file
sed -e '1i \ <..str..>\ '
#add lines in the middle of lines
sed -e '/<..line top..>/,/<..line bottom..>/c \ <..insert lines..> \ '
#add line end of file
sed -e '$a \ <..str..>\ '
BusyBox v1.31.1 () multi-call binary.
Usage: sed [-i[SFX]] [-nrE] [-f FILE]… [-e CMD]… [FILE]…
or: sed [-i[SFX]] [-nrE] CMD [FILE]…
-e CMD Add CMD to sed commands to be executed
-f FILE Add FILE contents to sed commands to be executed
-i[SFX] Edit files in-place (otherwise sends to stdout)
Optionally back files up, appending SFX
-n Suppress automatic printing of pattern space
-r,-E Use extended regex syntax
If no -e or -f, the first non-option argument is the sed command string.
The remaining arguments are input files (stdin if none).
1.2.4 Regular expressions
https://murashun.jp/blog/20190215-01.html
It must be so helpful for you.
Learn hard!
need escape\
- *? [ ‘ ” ` \ $ ; & ( ) | ~ < > # % = [space][tab][cr]
1.3 Disk handling
#mount-unmount
#device detection
dmesg
#well known point
/mnt /media
#partationing
fdisk just for MBR(old type gdisk GPT parted
#format
mkfs -t xfs /dev/vdb