Test $1$:

$1.$desc $-$ Input to check bad cd$.$ No arguments are passed to cd$.$

$1.$err $-$ An error has occurred

$1.$in $-$ cd

exit

$1.$out $-$

Test $2$:

$2.$desc $-2$ arguments are passed to $cd.$

$2.$err $-$ An error has occurred

$2.$in $-$ cd $/$bad$1/$bad$2$

exit

$2.$out $-$

Test $3$:

$3.$desc $-$ Is with a bad directory name.

$3.$err $-$Is: $/$no$/$such$/$file: No such file or directory

$3.$in $-$ Is $/$no$/$such$/$file

exit

$3.$out $-$

Test $4$:

$4.$desc $-$ Input to run misc. commands.

$4.$err $-$

$4.$in $-$ cd tests$/$p$2$a$-$test

$4$ out$-$test $1$ is

test$1$ test$2$

test$3$

test$4$

void process$\_$command$($const char "command, int line$\_$number$)\{$

printf$("$line$\%$d: $\%$sin$",$ line$\_$number, command$)$;

void interactive$\_$mode$()\{$

char command$[$MAX$\_$COMMAND$\_$LENGTH$]$;

int line$\_$number $=1$;

while $(1)$ f

printf$("$wish$>")$;

if $($fgets$($command$,$ MAX$\_$COMMAND$\_$LENGTH, stdin$)==$ NULL$)\{$

break; $//$ Exit loop on EOF

$\}$

process$\_$command$($command$,$ line$\_$number$++)$;

$\}$

void batch$\_$mode$($FILE $*$file$)\{$

char command$[$MAX$\_$COMMAND$\_$LENGTH$]$;

int line$\_$number $=1$;

while $($fgets$($command$,$ MAX$\_$COMMAND$\_$LENGTH, file$)!=$ NULL$)($

process$\_$command$($command$,$ line$\_$number$++)$;

$\}$

common.h:

void process$\_$command$($const char $*$command$,$ int line$\_$number$)$;

void interactive$\_$mode$()$:

void batch$\_$mode$($FILE $*$file$)$;

Test $5$:

$5.$desc $-$ Tries to exit with an argument. Should throw an error.

$5.$err $-$ An error has occurred

$5.$in $-$ exit bad

exit

$5.$out $-$

Test $6$:

$6.$desc $-$ Try running a shell script without setting path.

$6.$err $-$ An error has occurred

$6.$in $-$

p$1.$sh

exit

$6.$out $-$

Test $7$:

$7.$desc $-$ Set path, run a shell script. Overwrite path and then try running the script again.

$7.$err $-$ An error has occurred

An error has occurred

$7.$in $-$ path tests

p$1.$sh

path

p$1.$sh

Is

exit

$7.$out $-$ test$1$

test$2$

test$3$

Prompt:

using the provided code and test files, improve the code to pass these testing files.

Be sure that $/$bin$/$ls should come from a search from paths, and should not be hard coded. The same with the testing folder as well. Make sure to use execv$()$ and not execvp$().$