TechShell-CSC-435
Shell Program in C for CSC-435 Operating Systems Course
Gustave Abel Michel III
Non functional
- True Piping
Functional
- Pseudo Pipe (using temp files)
- Execution of Commands
- Multiple Commands (seprated by semicolon)
- Redirection
- In, out, and both simulationious
- built in commands
- Strings
- Variable replacement using $
Features
-
a)
%> ls; echo "awesome"
Command.c Command.o Parser.c Parser.o techShell techShell.o Variable.h
Command.h Makefile Parser.h Readme techShell.c Variable.c Variable.o
awesome -
b) Not truely Functional (uses temp files, which are deleted after)
%> ls | wc
15 15 155 -
c)
%> ls > out; wc < out
15 15 144 -
d)
%> set A "WOW DUDE"
%> set B "COOL"
%> list
A:WOW DUDE
B:COOL
%> set B
%> list
A:WOW DUDE
%> echo $A
WOW DUDE -
e)
%> asdf
TSH: No such file or directory
%> set
TSH: Error, no Variable name given