RUNNING

• run "make"

• execute by using "./myShell"

• type "quit" to exit the shell

FEATURES

ls command

Usage:

• ls takes arguments as flags (in the form -(flagname)) and directories (in the form -(directory name)) in any order.
• It lists the files of all the directories mentioned, in the form of option selected by the flags.
• If there is no directory mentioned, it lists the files of current directory

• "ls" - lists in alphabetical order
• "ls -a" - display hidden files
• "ls -l" - long list
• "ls -al"/"ls -la"/"ls -l -a"/"ls -a -l" - long list including hidden files

• Similarities to real command: "ls -a" displays files sorted in alphabetical order (NOT CONSIDERING THE PREPENDED '.')

cd command

• "cd (absolute path)" - goes to absolute path
• "cd" - goes to ~/
• "cd ~/(pathname)" - goes to ~/(pathname)
• "cd .." - goes to previous directory
• "cd ." - goes to same directory

echo command

• "echo" - prints empty line
• "echo text" - prints "text"
• "echo 'text' " - prints "text"
• "echo $var" - prints value of linux environment variable "var"

pwd command

• "pwd" - prints absolute path of present working directory

pinfo command

• "pinfo" : prints the process related info of the shell program
• "pinfo " : prints the process info about given pid

• pid --
• Process status -- {R/S/S+/Z}
• Memory
• Executable path -- (Absolute path - includes ~/ if executable is present inside the shell directory)