JCAC Mod 5 UNIX Commands

Information Technology13 CardsCreated 4 months ago

This flashcard set introduces the UNIX man command, used to display online manual pages for other commands. It provides detailed usage instructions, options, and examples to help users understand and execute commands effectively.

man

Displays on-line manual pages about command.

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Key Terms

Term
Definition

man

Displays on-line manual pages about command.

clear

Clears the current screen providing an empty terminal window.

pwd

Print working directory, displays the current working directory.

date

Prints or sets the system date and/or time

tree

Lists directory contents in a tree-like format

exit

Exit the current shell

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TermDefinition

man

Displays on-line manual pages about command.

clear

Clears the current screen providing an empty terminal window.

pwd

Print working directory, displays the current working directory.

date

Prints or sets the system date and/or time

tree

Lists directory contents in a tree-like format

exit

Exit the current shell

ls

ls -l

ls -i

ls -s

ls -a

Lists contents of a directory
long list - shows ownership, permission, and links
-i Displays inode number in the first field
-s Displays number of file system blocks used by file
-a List all files including invisible files

less
less b
less /
less q

Displays text files one screen at a time

Allows backwards movement, one page at a time

/ Initiates a search for a string (word)

q Exits from less

SPACE BAR Advances one screen at a time

ENTER Key Advances one line at a time

more

Displays text files one screen at a time

Works like the less command but with fewer options

head

Automatically prints the first 10 lines of a file to standard output

tail

command automatically displays the last 10 line

cat

Displays file(s) contents to the screen and can concatenate (combine) files

echo

will print to the screen anything following it