1. The system
# passwd: Change Password
# exit: Exiting the system
2. Document
# cp: Copy files or directories, parameters:-A recursive directory,-I override confirmation
# mv: Change the name to move
# rm: Delete, Parameters:-R Recursive Delete
3. Table of Contents
# mkdir: Creating a Table of contents
# rmdir: Delete Empty directory
# CD: Changing working directory
# pwd: View current path
# ls: Column directory, parameters:-A All files,-C sorted by time,-l details
4. The text
# Sort: Sorting
# Uniq: Delete duplicate rows
5. Backup compression
# tar: File, Parameters:-C Create New file,-R append to end,-t list file content,-u update files, x release files, f use files or devices,-m multiple volumes,-v detailed report,-W per step confirmation. Example Tar cvf text.tar *.txt
# gzip: Compression decompression, Parameters:-D decompression,-R recursive compression
# Unzip: Uncompressed, Parameters:-D directory,-X decompression
6. Permissions
# chmod: Change permissions, R readable, W writable, x executable. 0 means no permissions, 1 for executable, 2 for writable, 4 for readable, and then add. For example, if you want the owner of a file to have read/write two permissions, you need to have 4 (readable) +2 (writable) =6 (read/write).
# chgrp: Changing the owning user group
# Chown: Change the Lord
7. Management
# Wall: Send information to all logged-in users
# write: Send a message to a user
# MESG y: setting allows others to send their own messages
# Sync: Cache Sync Checksum
# Shutdown: Shutdown, Parameters:-R reboot, H-shutdown does not restart,-F fast shutdown,-C cancellation shutdown
# Free: View memory
# Uptime: Show system run time
# DF: Disk footprint, Parameters:-A displays all file systems
# du: Disk usage
# dd: Copy-and-format conversion
# Fdformat: Low-grid floppy
# Echo: Display text
# cal: Calendar
# Date: system date and time
# Clear: Clean screen
8. My Memories by Tom2sun
# Who: View current users
# finger: View other user information
# rlogin: Remote Login
# rcp: remote replication
# netstat: Network status
# Cat: Full display at once
# more: Split-screen display
# file: Listing files types
# grep: Finding content
# Find: Finding Files
# PS: Current run program, parameter-a shows all processes
# at: Time, command, Ctrl+d end
# LP: Printing
# Nice: Specify priority
# Renice: Adjust priority
# Kill: Terminate Process
# Man: Get command Help
# Touch: Change the time record
# ln: Links
# MOUNT-T Vfat/dev/hda1/mnt/dos: Mounting DOS partitions (not applicable to Unix-center)
9. FTP
# ftp: Start FTP program
Ftp>
Open: Opening
Close: Off
Bye: Leave
Get: Download
Put: Upload
Mget/mput: Multiple file downloads/uploads
Reget: Resuming downloads
Binary: Binary transfer file
ASCII:ASCII Code Transfer
CDS: Changing Remote directories
LCD: Change Local Directory
mkdir: Building a Directory
RmDir: Delete Directory
Delete: Deleting files
Mdelete: Delete multiple at once
Rename: Renaming
Status: Display status
Prompt: Interactive
Hash: 1024 bytes per transfer display # (hash)
Size: Display file size
Reset: RESET
Vi. VI
A,i: Enter the input state
ESC: Return to command status
: Command mode
q!: Exit
11. Fast Keys and other
ALT+F1~F6: Access to multiple virtual consoles (not applicable to Unix-center)
TAB: Command Completion
End: Background process