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Full Discussion: New user needs help with bourne shell script
Homework and Emergencies Homework & Coursework Questions New user needs help with bourne shell script Post 302939055 by luislozoya on Sunday 22nd of March 2015 12:24:56 AM
Old 03-22-2015
New user needs help with bourne shell script
This is my question, below the question is the template

Write and execute a Bourne shell script called homework that will

From within the script, create three background processes:
a) (2 points) one that saves a long listing of your hidden files to a file named hiddenlist
b) (2 points) one that saves a full listing of the status of your current running processes to a file named pstat
c) (2 points) one that stores only the count of the number of words from the file homework2 into a file named wordcount
d) (1 point) issue a command to wait for ALL three background processes to complete.
e) (1 point) give the user a message stating that the process are completed



1.There are no variables.

2. Relevant commands, code, script, alogrithems.
The relevant command would be cat to create files the | to join commands
for a I would need ls -la
for b I would need ps
for c I would need wc
for d I would need wait
for e I would need echo

3. Here is one of the many attempts I have made to solve this problem, I have many more but don't want
to flood the forum with my failed attempts.




Code:
cat > hiddenlist | ls -la > hiddenlist
cat > pstat | ps > pstat
cat > wordcount | wc homework2 > wordcount
wait

echo “Background Processes complete”


4. California State University Fullerton, Fullerton California USA Floyd Holiday CPSC253U
Last edited by Don Cragun; 03-22-2015 at 03:04 AM.. Reason: Add CODE and ICODE tags.
 

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LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)
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