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Improve my shell by adding hierarchical directories.


 
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# 8  
Old 11-03-2009
Quote:
there is no chdir mkdir ..etc in that shell
OK, then how did this shell support making, changing and removing directories?

Meanwhile here is the source code for the Kenneth Almquest clone of the Bourne shell in FreeBSD 2.0, which is approx 15 years old, for you to examine.
# 9  
Old 11-03-2009
Hi.

File V7/usr/src/cmd/sh/xec.c contains:
Code:
				case SYSCD:
					IF flags&rshflg
					THEN	failed(com[0],restricted);
					ELIF (a1==0 ANDF (a1=homenod.namval)==0) ORF chdir(a1)<0
					THEN	failed(a1,baddir);
					FI
					break;

The mkdir command is usually a program external to the shell.

Good luck ... cheers, drl
# 10  
Old 11-03-2009
As this is homework and you just post there, Im closing this thread.
Please continue here :
https://www.unix.com/homework-coursew...ide-shell.html

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