Make command: make
cd is used to change the current working directory to a specified folder.
Flags Implemented :-
- (追記) -P (追記ここまで)
This flag uses physical directory structure without following symbolic links. - (追記) -e (追記ここまで)
When this flag is used, if the -P option is supplied, and the current working directory cannot be determined successfully, exit with a non-zero status.
Usage :-
To use relative or absolute paths, the command is used as it is with the flags required as cd [-P [-e]] path . You can also go directly to the shell home using the command as cd [-P [-e]]. The path can also be relative to shell home using the ~ prefix.
Displays a line of text on the terminal.
Flags Implemented :-
- (追記) -n (追記ここまで)
This flag doesn’t append a new line. - (追記) -e (追記ここまで)
This flag enables interpretation of backslash escapes.
Usage :-
The command can be called as echo [-e] [-n] text .
Maintains a history of all the commands used across all the sessions of the shell.
Flags Implemented :-
- (追記) -c (追記ここまで)
This flag clears the history list by deleting all of the entries. - (追記) -d (追記ここまで)
This flag deletes the history entry at position OFFSET. Negative offsets count back from the end of the history list.
Usage :-
To view the entire history, use command history. To view the last OFFSET commands, use history OFFSET. To delete the command at OFFSET, use history -d OFFSET. To clear the entire history, use history -c.
This command gives the present working directory of the shell.
Flags Implemented :-
- (追記) -L (追記ここまで)
This flag uses PWD from the environment, even if it contains symlinks. - (追記) -P (追記ここまで)
This flag avoids all symlinks.
Usage :-
To use this command, simply run it as pwd [-P] [-L].
This command exits the user from the shell.
Usage :-
Use as exit.
Using this command, the user can print the system date and time.
Flags Implemented :-
- (追記) -u (追記ここまで)
Prints the coordinated universal time (UTC). - (追記) -R (追記ここまで)
Outputs date and time in RFC 5322 format.
Usage :-
The command can be called as date [-u] [-R].
This command concatenates file and prints on the standard output.
Flags Implemented :-
- (追記) -E (追記ここまで)
This flag displays $ at end of each line. - (追記) -n (追記ここまで)
This flag numbers all output lines.
Usage :-
The command can be called as cat [-E] [-n] file1 file2 ... to concatenate files in those order.
This command is used to list directory contents.
Flags Implemented :-
- (追記) -a (追記ここまで)
Using this flag, the command does not ignore entries starting with . - (追記) -A (追記ここまで)
Using this flag, the command does not list implied . and ..
Usage :-
The command can be called as ls [-a] [-A] path1 path2 ... to list the contents of files or directory in that order.
This command can be used to remove files or directories.
Flags Implemented :-
- (追記) -i (追記ここまで)
This flag prompts before every removal. - (追記) -v (追記ここまで)
This flag explains what is being done.
Usage :-
The command can be called as rm [-i] [-v] file1 file2 ....
Using this command, we can make directories.
Flags Implemented :-
- (追記) -p (追記ここまで)
This flag creates all the directories recursively. - (追記) -v (追記ここまで)
This flag prints a message for each created directory
Usage :-
The command can be called as mkdir [-p] [-v] file1 file2 ....