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os_shell's Introduction

					Ashell for Operating Systems course
					   By Aaron Augustine - 20171207

INSTRUCTIONS:

Use make all to compile the files. Use make clean to get rid of already existing executables. Run the shell using "./ash"

INFORMATION: This shell consists of 5 C files and one header file for compilation and linking. Each file consists of a different part of shell implementation.

Builtin: Consists of all builtin fucntions such as - ls, cd, echo, pwd, clock, remindme and all the corresponding flags. Execute: Consists of code to execute remaining commands in as background or foreground processes. Prompt: Consists of code to print the prompt correctly and is used often by other functions. Pinfo: Consists of code exclusively for the pinfo command to emphasize its role in handling sensitive information and its requirement of permissions. Main: The main driver program running the shell.

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