03-09-2013
Processes Lab
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1. The problem statement, all variables and given/known data:
Here are my directions. I am pretty sure I am doing this right, but I just want someone more experienced to look over my work. Thank you.
There are two parts. It seems long but it's not. For both I need to record my inputs into a script file :
Part 1:
1) Start the command "sleep 6000" in the background
2) Use ps to determine its status
3) Redirect the ps command to a file
4) Kill the sleep process
5) Run ps to verify the process is dead.
Part 2: (Working with multiple processes)
1) Start up "sleep 6000" in the background
2) Start up "sleep 3000" with nohup in the background
3) Bring "sleep 6000" to the foreground
4) Suspend "sleep 6000"
5) Use ps or jobs to verify the state of all processes
6) Send a copy of ps to a file and print it
7) Kill both processes
2. Relevant commands, code, scripts, algorithms:
The relevant commands would be those located under processes, since that is the section we are working on now.
3. The attempts at a solution (include all code and scripts):
First I do "touch lab5file" to create a file, then I do "script lab5" to record my inputs (My teacher wants one script file for both parts - he does not want the output, just commands)
Part 1:
1. sleep 6000 &
2 + 3. ps > /var/home/stud3/jgeiger/lab5file
4. kill -9 <PID number here>
5. ps
Part 2:
1. sleep 6000 &
2. nohup sleep 3000 &
3. fg %<job number for sleep 6000 here>
4. ctrl + z
5 + 6. ps > /var/home/stud3/jgeiger/lab5file
7. kill -9 <PID number for sleep 6000>
8. kill -9 <PID number for sleep 3000>
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Brookdale Community College - Lincroft, New Jersey - United States - Dr. Rick Bournique- COMP 145
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
Last edited by Jagst3r21; 03-09-2013 at 11:26 PM..
Reason: course link
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LEARN ABOUT OPENSOLARIS
mktemp
mktemp(3C) Standard C Library Functions mktemp(3C)
NAME
mktemp - make a unique file name from a template
SYNOPSIS
#include <stdlib.h>
char *mktemp(char *template);
DESCRIPTION
The mktemp() function replaces the contents of the string pointed to by template with a unique file name, and returns template. The string
in template should look like a file name with six trailing 'X's; mktemp() will replace the 'X's with a character string that can be used to
create a unique file name. Only 26 unique file names per thread can be created for each unique template.
RETURN VALUES
The mktemp() function returns the pointer template. If a unique name cannot be created, template points to a null string.
ERRORS
No errors are defined.
EXAMPLES
Example 1 Generate a filename.
The following example replaces the contents of the "template" string with a 10-character filename beginning with the characters "file" and
returns a pointer to the "template" string that contains the new filename.
#include <stdlib.h>
...
char *template = "/tmp/fileXXXXXX";
char *ptr;
ptr = mktemp(template);
USAGE
Between the time a pathname is created and the file opened, it is possible for some other process to create a file with the same name. The
mkstemp(3C) function avoids this problem and is preferred over this function.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mkstemp(3C), tmpfile(3C), tmpnam(3C), attributes(5), standards(5)
SunOS 5.11 15 Sep 2004 mktemp(3C)