Clear: Clean screen
Date: Show current date
Echo: Shows a date
DF: Displaying disk consumption
Free: Displays system memory usage, physical memory and swap memory
Uptime: Show how long the system has been running
Sync: Writes system memory to the hard drive and releases the cache.
Cal Month Year: Displays the calendar for a particular month
Touch: Create a new file
File +filename: View type information on the filename file.
Cat +filenaen: Displaying file contents
More-n +filename: Displays the content information of filename, the screen shows n rows. The space shows the next screen, carriage return line > One line display, less with more similar, but is through the key to the page.
Head-n +filename: Displays the first n rows of a file
Tail-n +filename: N rows after displaying text
Od-a +filename: Display text According to how many, D is decimal, O is octal, x is hexadecimal, default
Octal.
Hard Link: The new file is an alias for a file that already exists, and when the original file is deleted, the new file can still be > used.
Soft Links: Also known as symbolic links, new files in the form of "path" to represent another file, and Windows fast > Czech way very similar, new soft links can point to nonexistent files.
Ln-s Target link_name: Create a soft connection. Target is the destination file or path, Link_name is a link name > Word
ln target link_name: is a hard link.
WC-CLW path_filename: Displays the number of bytes, lines, and words in the file
Comm filename1 filename2: Displays the words that exist in each file of two files and the words that exist
40,1 81%
Head-n +filename: Displays the first n rows of a file
Tail-n +filename: N rows after displaying text
Od-a +filename: Display text According to how many, D is decimal, O is octal, x is hexadecimal, default
Octal.
Hard Link: The new file is an alias for a file that already exists, and when the original file is deleted, the new file can still be > used.
Soft Links: Also known as symbolic links, new files in the form of "path" to represent another file, and Windows fast > Czech way very similar, new soft links can point to nonexistent files.
Ln-s Target link_name: Create a soft connection. Target is the destination file or path, Link_name is a link name > Word
ln target link_name: is a hard link.
WC-CLW path_filename: Displays the number of bytes, lines, and words in the file
Comm filename1 filename2: Displays the words that exist in each file of two files and the words that exist
40,1 81%
Find/-name FileName: Finds all of the file name files under the root directory
cp-rf/home/user1/*/root/temp/
Copy everything under the/home/user1 directory to/root/temp/without copying the User1 directory itself.
The format is: CP-RF original path/destination path/