Common Linux Commands

1. Change directory: CD [directory]
2. To view files in the current directory: ls -a[View all files including hidden]/-l[View file display permission and ownership]
3. View the current directory: PWD
4. Copy files or folders: cp [filename/-r folder]
5. Remote copy files or folders:

• SCP [-r] local_path username@ip:path
• SCP [-r] username@ip:path local_path

6. Move or rename files or folders: mv [file/folder]
7. Create folder: mkdir [folder_name];
8. To change the permission of a file or folder: chmod [-r: traverses all files in the folder] [Permission] [file/folder]

• For example, 777 indicates that the user/group/other permission is 4+2+1/4+2+1/4+2+1. 4 indicates the read permission, 2 indicates the write permission, and 1 indicates the execute permission
• The first digit in DRWXR –r– : d for folder, S for socket file, – for normal file, and L for soft chain

9. Change the owning user or user group of a file: chown owner:group [file/folder]
10. New file:

• touch [filename]
• vi/vim [filename]

11. View files:

• Output file contents: cat [filename]
• Tail [-f: Output file content in real time] [filename]
• less

12. Search content:

• Grep [regular]
• awk

13. Create soft chain: ln -s [realpath/filename] [realPath]
14. View the process that contains all users: ps-aux
15. To view the port: netstat -anp

• A indicates that all LISTEN files are displayed. By default, LISTEN files are not displayed
• N indicates that no numeric alias is displayed
• P stands for: shows associated programs

16. The compression

• Decompress: tar -zxvf [filename]
• Zip: tar -zcvf [filename]

17. View the current command path, which
18. Viewing the Current User

• who
• whoami

19. Check how long the current system runs: uptime
20. Read the disk space: df -h
21. Du -f –max-depth=[traversal folder depth] [file/folder]
22. Debian add software source: apt-add-repository
23. Find a file:

• find [path] -name [filename]
• find [path] -user [owername]
• find [path] -group [groupname]

24. To delete files or folders, run the rm [-r] [file/folder] command.
25. Process:

• Kill process: kill [pid]
• Parent process ID(PPID) : ps -ef

26. Shutdown/restart

• Shutdown: shutdown -h now
• Shutdown: init 0
• Shutdown: the halt
• Shutdown: poweroff
• Restart: shutdown -r now reboot

27. My common TMUx series commands

Create a new session: tmux new-s< session name > Cuts to a session: tMUx at -t < session name > Deletes a session: tMUxkill-session-t < session name > Get session list: tmux list Temporarily toggle a window to Max or min: prefix z push tmux but save session: prefix d create a window: Prefix c Split a window vertically: prefix % Split a window horizontally: prefix"

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28. logrotate

Add /etc/logrotate. d:

Nginx sample file

/var/log/nginx/*.log {
        # frequency of packing logs daily weekly monthly
        daily
        Add the date suffix to the package file
        dateext
        I can't find the log
        missingok
        Save 14 logs
        rotate 14
        Compressed logs default gzip
        compress
        # delay compression to the next rotate
        delaycompress
        # ignore empty logs
        notifempty
        #?
        create 0640 www-data adm
        # Execute all rotate before executing the script
        sharedscripts
        #?
        prerotate
                if [ -d /etc/logrotate.d/httpd-prerotate ]; then \
                        run-parts /etc/logrotate.d/httpd-prerotate; \
                fi \
        endscript
        #?
        postrotate
                invoke-rc.d nginx rotate >/dev/null 2>&1
        endscript
}

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Enforcement:

logrotate -f /etc/logrotate.d/nginx

Appendix: Shell judgment file

-eFilename True if the file exists-dFilename True if the file exists and is a directoryCopy the code

Install debian:

sudo apt-get install supervisor

Adding a configuration file:

Example configuration file:

[program:demo]
#?
directory = yourpath
Command to start the process
command = yourcommand
Start when Supervisor is started
autostart = true
The exit process automatically restarts
autorestart = true
The user who executes the command
user = www-data
# log path
stdout_logfile = /var/log/supervisor/demo.log
# This no means that supervior takes over the daemon when starting such as nginx or phP-fpm
daemonize = no

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Start or restart the Supervisor

Start our process

sudo supervisorctl start demo

28. Find the file name where whereis

Original text: github.com/TIGERB/easy…