SHELL-in-C:

Commands implemented:

pwd: Outputs the name of current directory
echo : Outputs the string
ls [-la,]: ls shows the contents of the file,-a flags shows the hidden files also,-l shows it in long form,ls dirname shows the contents of given directory.
cd : Go to directory
pinfo : pinfo shows information related to if specified otherwise related to current process
nigtswatch -n <dirty,interrupt> : Shows dirty memory or interrupts of CPU according to chosen option after every

HOW TO RUN:

Just type make and run ./SHELL file generated

NOTE:

q followed by ends nightswatch e in CLI quits the shell