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# Unix commands factpack
# Created: 12-29-99
# factpack creator: Sean Hollen

cd => Change the current working directory. Syntax: Cd (directory) Where directory is the directory which you want to change to. (".") refers to the current directory, "cd .." the parent directory. Example : cd /etc/usr: this will take you to the /et...
ls => Displays information about the named files and directories. Syntax: ls (file1) (file2) ...(fileN). Where file1 through fileN are the filenames or directories to list. The most commonly used options are -F (to display the file type) and -l (to g...
cp => Copies one or more files to another file or directory. Syntax: cp (file1) (file2) ...(fileN) (destination). Where file1 through fileN are the files to copy, and destination is the destination file or directory. Example: cp ../frog joe copies th...
mv => Moves one or more files to another file or directory. This command does the equivalent of a copy followed by the deletion of the original file. Where (file1) (file2) ...(fileN) (destination). Where file1 through fileN are the files to move, and...
rm => Deletes files. Note that when you delete a file under UNIX and or Linux they are unrecoverable!! Unlike MS DOS. Syntax: rm (file1) (file2) ...(fileN). Where file1 through fileN are the filenames to delete. The -i option prompts for confirmation...
mkdir => Creates new directories. Syntax: mkdir (dir1) (dir2) ...(dirN). Where dir1 through dirN are the directories to create. Example: mkdir /home/larry/test creates the directory test in /home/larry.
rmdir => Deletes empty directories. When using rmdir, the current working directory must not be within the directory to be deleted. Syntax: rmdir (dir1) (dir2) ...(dirN). Where dir1 through dirN are the directories to delete. Example: rmdir /home/lar...
man => Displays the manual page for that given command or resource (that is, any system utility that isn't a command, such as a library function. Syntax: man (command). Where command is the name of the command or resource to get help on. Example: man...
more => Displays the contents of the named files, one screenful at a time. Syntax: more (file1) (file2) ...(fileN). Where file1 through fileN are the files to display. Example: more papers/history-final displays the file papers/history-final.
cat => officially used to concatenate files. cat is also used to display the contents of a file on screen. Syntax: cat (file1) (file2) ...(fileN) Where file1 through fileN are the files to display. Example: cat letters/from-mdw displays the file lett...
echo => Displays the given arguments on the screen. Syntax: echo (arg1) (arg2) ..(argN). Where arg1 through argN are the arguments to echo. Example: echo "Hello World" displays the string "Hello World".
grep => Displays every line in one or more files that match the given pattern. Syntax: grep (pattern) (file1) (file2) ...(fileN). Where pattern is a regular expression pattern, and file1 through fileN are the files to search. Example: grep loomer /et...