generic symble
- cd /: root directory
- cd ~：usr directory
- cd ./: current directory path
- cd ..: up directory path
- ! + cmd(cd/p): invoke last command
- cmd+&: run job in background
file operation
- man+cmd: manual
- ls: list the diretory and files
- ls -a: list all includes hidden directory and files
- ls -l: format list
- ll: format list
- cd : change directory to the /home/user
- cd dir_path: go to the dir_path directory
- pwd: present working directory
- mkdir dir: crate a directory
- touch file: creat a file
- vi file: vi editor
- gvim file: gvim editor
- chmod+777（可执行状态）+dir/file name: change r/w/x property
- cat file: look at the file context on terminal
- more file: view the file
- less file: view the file like gvim or vi
- cp file1 file2: copy file1 to file2
- co -r dir1 dir2: copy directory recursivety
- mv file1 dir/file2: move (or rename) file1 to dir/file2
- wc file: count lines words an characters
- wc -w file: count word of file
- wc -l file: count line
- rm fileL remove file
- rm -r dir: remove dir
- rm -f file: enforced
- rm -rf dir: enforced
- ln -s +file name + link name: crate a symbolic link to file（链接脚本用）
- grep + pattern+file name: search pattern matched in file
- grep error sim.log:
- grep -r pattern dir: search pattern incursively in directory
- find / -name file: search the file from / directory (fine /etc -name '*con*')
- fine /+path+ -size +100M(路径下大于100M的)
pack files
- tar -cvf file_name.tar file_name: crate a tar file
- tar -xvf file.tar: extract
- tar -czvf file_name/ tar.gz file_name
- tar -xzvf file_name/ tar.gz file_name
- tar -cjvf file_name/ tar.bz2 file_name: bzip2
- tar -xjvf file_name/ tar.bz2 file_name
- gzip file_name: gz
- gzip -d file.gz
install rpm package
rpm -qa: query all installed RPM packages
rpm -ivh RPM .rpm: install RPM package
./configure
make(语言包)
make install
grep ERROR cmp.log > error.log(把error放到文件里)
grep ERROR sim.log >> error.log（原来的和现在的都放进去）
cat > file_name: sample the standard input and put the into the file
cmd | grep pattern: search pattern in cmd output
rpm -qa |grep vim(前面命令输出是后面命令的输入)
cat /etc/passwd | grep /bin/bash |wc -l
grep ERROR sim.log | tee -a error.log
man ls | col -b > ls_man.txt
process manage
- ps：display the current active process
- top: display all process of the OS
- kill pid: stop the pid process
- killall proc: stop all of the proc process
- bg: list the suspended job in background
- fg: resume the last suspended job in foreground
system info
- data
- data + \Y\m\d
- data + \s
- data + \N
- cal: display calendar
- uptime
- w: display who logen and what are doing
- whoami: print effective userid
- uname -a: display all OS system info
- which cmd: show the full path of the cmd
- su root|usr: change the usr
- exit: usr shell quit
- echo $PATH: show the variable
- clear: clear the info on the terminal
- history: show the command history
- !cmd: invoke the last cmd
- make: invoke Makefile
- make clean: make cpl; make sim
- cat /proc/cpuinfo: show CPU information
- cat /proc/meminfo: show memory information
- df: report file system disk space usage
- du - b|k|m file/dir: estimate file space usage
- du -s file/dir: summary
- du -sm file/dir
network info
- ping host|IP: ping IP address and print resule
- hostname: display system host name
- ifconfig -a: configure the network
hot key
- CTRL + c: stop the current command
- CTRL + z: suspend the job and put it into background ,"fg" can be used to resume the job free the license and take it soon
