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· Assignment 2

See Assignment / Project Requirements and Guidelines

Write a shell script to concatenate lists together, and output the resulting list. Do not include any argument that is a sub-list of the entire list. (The script will clean the list of any redundant items.) You must preserve the original order of the list. Remember to account for the following situations:

· a : at the beginning of the list is the same as a . at the beginning of the "list" (:/bin is the same a .:/bin)

· a :: any where in the list is the same as :.: (/bin::/etc is the same as (/bin:.:/etc)

· a : at the end of the list is the same a :. ( /bin: is the same as /bin:. )

· Project usings temporary files will not be graded.

· The input to the script will be color or space separated lists and the output will be a colon separated list with the orignal order preserved and all redunant items removed. USAGE:  clean_list list .... Where list a a colon or whitespace separated list. Examples:

prompt> clean_list a a:b a:b:c :x: y:z a:b:c:.:x:y:z prompt>clean_list /bin:/usr/bin:/usr/openwin/bin      /usr/bin:/usr/etc:/etc:     /usr/bin/X11 .:/bin /bin:/usr/bin:/usr/openwin/bin:/usr/etc:/etc:.:/usr/bin/X11 prompt>clean_list apple:orange:apple pear orange peach apple:orange:pear:peach

REMEMBER TO HANDLE THE SPECIAL CASES OF LEADING :, A ::, AND A TRAILING :

 

 

· Example Script very similar to Project 2

The following script is very similar to project 2; however, the major differences are is that it works with a single variable, not the command line arguments and  the script tests to see if directories exist (not needed for project 2). Also, for project 2,  each positional parameter, can be a special case, where  : at the begining of a paramter is really .:,  a :: in a parameter is really :.:, and a : at the end of a parameter is :. 

You should run this script and see what happens and then modify it to meet the requirements for project 2

That is the tricky part, becase   A:B  :C  -->  is  A:B:.:C  but the code below won't handle that case.

#!/bin/sh

NP=

for P in `echo $PATH | sed -e 's/^:/.:/' -e 's/::/:.:/' -e 's/:$/:./' -e 's/:/ /g'`

do

case $NP in

"")

if [ -d "$P" ]

then

NP="$P"

fi

;;

$P|$P:*|*:$P:*|*:$P)

continue

;;

*)

if [ -d "$P" ]

then

NP="$NP:$P"

fi

;;

esac

done

echo $NP

Linux assignment 2/output for assignment 2.pdf

10/23/2017 https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt

https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt 1/4

RAN    ==> mar2.sh : 

RESULT ==>  PASSED 

EXPECTED RESULT ==> . 

PROGRAM OUTPUT  ==> . 

RAN    ==> mar2.sh : . 

RESULT ==>  PASSED 

EXPECTED RESULT ==> . 

PROGRAM OUTPUT  ==> . 

RAN    ==> mar2.sh apple orange pear peach 

RESULT ==>  PASSED 

EXPECTED RESULT ==> apple:orange:pear:peach 

PROGRAM OUTPUT  ==> apple:orange:pear:peach 

RAN    ==> mar2.sh x xxx xxx xxxx xxxxx x:xx:xxx:xxxx:xxxxx yx:yxx:yxxx:yxxxx:yxxxxx 

RESULT ==>  PASSED 

EXPECTED RESULT ==> x:xxx:xxxx:xxxxx:xx:yx:yxx:yxxx:yxxxx:yxxxxx 

PROGRAM OUTPUT  ==> x:xxx:xxxx:xxxxx:xx:yx:yxx:yxxx:yxxxx:yxxxxx 

RAN    ==> mar2.sh :a b c 

RESULT ==>  PASSED 

EXPECTED RESULT ==> .:a:b:c 

PROGRAM OUTPUT  ==> .:a:b:c 

RAN    ==> mar2.sh a :b c 

RESULT ==>  PASSED 

EXPECTED RESULT ==> a:.:b:c 

PROGRAM OUTPUT  ==> a:.:b:c 

RAN    ==> mar2.sh a b: c 

RESULT ==>  PASSED 

10/23/2017 https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt

https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt 2/4

EXPECTED RESULT ==> a:b:.:c 

PROGRAM OUTPUT  ==> a:b:.:c 

RAN    ==> mar2.sh a b::c 

RESULT ==>  PASSED 

EXPECTED RESULT ==> a:b:.:c 

PROGRAM OUTPUT  ==> a:b:.:c 

RAN    ==> mar2.sh a b c: 

RESULT ==>  PASSED 

EXPECTED RESULT ==> a:b:c:. 

PROGRAM OUTPUT  ==> a:b:c:. 

RAN    ==> mar2.sh :a b c a b c . :a b c a b 

RESULT ==>  PASSED 

EXPECTED RESULT ==> .:a:b:c 

PROGRAM OUTPUT  ==> .:a:b:c 

RAN    ==> mar2.sh aa bb: c a b c 

RESULT ==>  PASSED 

EXPECTED RESULT ==> aa:bb:.:c:a:b 

PROGRAM OUTPUT  ==> aa:bb:.:c:a:b 

RAN    ==> mar2.sh a b::c:d a b c . :a b c a b 

RESULT ==>  PASSED 

EXPECTED RESULT ==> a:b:.:c:d 

PROGRAM OUTPUT  ==> a:b:.:c:d 

RAN    ==> mar2.sh a b c: a b c . :a b c a b 

RESULT ==>  PASSED 

EXPECTED RESULT ==> a:b:c:. 

PROGRAM OUTPUT  ==> a:b:c:. 

10/23/2017 https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt

https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt 3/4

RAN    ==> mar2.sh /usr/bin /bin 

RESULT ==>  PASSED 

EXPECTED RESULT ==> /usr/bin:/bin 

PROGRAM OUTPUT  ==> /usr/bin:/bin 

RAN    ==> mar2.sh  /opt/SUNWspro/bin:/usr/bin:/usr/dt/bin:/usr/openwin/bin:/usr/local/bin:/opt/sfw/bin:/usr/sfw/bin:.:/u sr/ccs/bin:/usr/ucb:/usr/platform/SUNW,Sun‐Fire‐ V240/sbin:/sbin:/usr/sbin:/usr/local/sbin:/usr/sadm/bin:/usr/lib:/usr/platform/sun4u/sbin  /opt/SUNWspro/bin:/usr/bin:/usr/dt/bin:/usr/openwin/bin:/usr/local/bin:/opt/sfw/bin:/usr/sfw/bin:.:/u sr/ccs/bin:/usr/ucb:/usr/platform/SUNW,Sun‐Fire‐ V240/sbin:/sbin:/usr/sbin:/usr/local/sbin:/usr/sadm/bin:/usr/lib:/usr/platform/sun4u/sbin 

RESULT ==>  PASSED 

EXPECTED RESULT ==>  /opt/SUNWspro/bin:/usr/bin:/usr/dt/bin:/usr/openwin/bin:/usr/local/bin:/opt/sfw/bin:/usr/sfw/bin:.:/u sr/ccs/bin:/usr/ucb:/usr/platform/SUNW,Sun‐Fire‐ V240/sbin:/sbin:/usr/sbin:/usr/local/sbin:/usr/sadm/bin:/usr/lib:/usr/platform/sun4u/sbin 

PROGRAM OUTPUT  ==>  /opt/SUNWspro/bin:/usr/bin:/usr/dt/bin:/usr/openwin/bin:/usr/local/bin:/opt/sfw/bin:/usr/sfw/bin:.:/u sr/ccs/bin:/usr/ucb:/usr/platform/SUNW,Sun‐Fire‐ V240/sbin:/sbin:/usr/sbin:/usr/local/sbin:/usr/sadm/bin:/usr/lib:/usr/platform/sun4u/sbin 

RAN    ==> mar2.sh mar mary mar mark mary martin 

RESULT ==>  PASSED 

EXPECTED RESULT ==> mar:mary:mark:martin 

PROGRAM OUTPUT  ==> mar:mary:mark:martin 

RAN    ==> mar2.sh :mar mary mar mark mary martin /usr/bin:/bin:/usr/local/bin:. 

RESULT ==>  PASSED 

EXPECTED RESULT ==> .:mar:mary:mark:martin:/usr/bin:/bin:/usr/local/bin 

PROGRAM OUTPUT  ==> .:mar:mary:mark:martin:/usr/bin:/bin:/usr/local/bin 

RAN    ==> mar2.sh martin mar mary mar mark mary martin: 

RESULT ==>  PASSED 

EXPECTED RESULT ==> martin:mar:mary:mark:. 

PROGRAM OUTPUT  ==> martin:mar:mary:mark:. 

RAN    ==> mar2.sh x yx yxx . yx xx yxxx xxxx yxxxxx: x:xx:xxx:xxxx:xxxxx yx:yxx:yxxx:yxxxx:yxxxxx 

10/23/2017 https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt

https://uml.umassonline.net/bbcswebdav/pid­916183­dt­content­rid­4615042_1/courses/INFO.3120.061.FA17/mar2.sh.res.txt 4/4

RESULT ==>  PASSED 

EXPECTED RESULT ==> x:yx:yxx:.:xx:yxxx:xxxx:yxxxxx:xxx:xxxxx:yxxxx 

PROGRAM OUTPUT  ==> x:yx:yxx:.:xx:yxxx:xxxx:yxxxxx:xxx:xxxxx:yxxxx 

RAN    ==> mar2.sh . yx xx yxxx xxxx yxxxxx: x:xx:xxx:xxxx:xxxxx yx:yxx:yxxx:yxxxx:yxxxxx 

RESULT ==>  PASSED 

EXPECTED RESULT ==> .:yx:xx:yxxx:xxxx:yxxxxx:x:xxx:xxxxx:yxx:yxxxx 

PROGRAM OUTPUT  ==> .:yx:xx:yxxx:xxxx:yxxxxx:x:xxx:xxxxx:yxx:yxxxx 

RAN    ==> mar2.sh yx xx yxxx xxxx yxxxxx x:xx:xxx:xxxx:xxxxx yx:yxx:yxxx:yxxxx:yxxxxx . 

RESULT ==>  PASSED 

EXPECTED RESULT ==> yx:xx:yxxx:xxxx:yxxxxx:x:xxx:xxxxx:yxx:yxxxx:. 

PROGRAM OUTPUT  ==> yx:xx:yxxx:xxxx:yxxxxx:x:xxx:xxxxx:yxx:yxxxx:. 

PASSED ==> 21         100%       

FAILED ==> 0          0%