10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
does anyone know how to check in an 'if' statement if a particular directory is a child directory of a particular directory?
help ~ (2 Replies)
Discussion started by: ymc1g11
2. Shell Programming and Scripting
i am very new to linux , working on bash shell.
I am trying to solve the given problem
1. Create a process and then create children using fork
2. Check the Status of the application for successful running.
3. Kill all the process(threads) except parent and first child... (2 Replies)
Discussion started by: vizz_k
3. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
I need to make an program that in a loop creates one parent and five children with fork(). The problem i'm trying to solve is how to delete the parent and child of the childīs process.
2. Relevant commands, code, scripts,... (0 Replies)
Discussion started by: WhiteFace
i used function fork().
so i made two process.
parent process accepted socket fd and writing to shared memory.
then now. how can child process share parent's socket fd?
is this possible?
Thanks in advance (1 Reply)
Discussion started by: andrew.paul
5. UNIX for Advanced & Expert Users
I am writing a script which calls other third party scripts that perform numerous actions. I have no control over these scripts.
My problem is, one of these scripts seems to execute and do what it is meant to do, but my calling / parent script always exits at that point. I need to... (4 Replies)
Discussion started by: mark007
6. Shell Programming and Scripting
Greets all. This is using bash/sh on Slackware Linux 12....
I have a parent and MANY children scripts. The parent would be:
for script in scripts/*.sh; do
sh $script || exit 1
I'm trying to get a child script to quit running without bombing my parent script. This would be the... (5 Replies)
Discussion started by: madpenguin
7. Shell Programming and Scripting
I have a global function name func1() that I am sourcing in from script A. I call the function from script B. Is there a way to find out which script called func1() dynamically so that the func1() can report it in the event there are errors?
Thanks (2 Replies)
Discussion started by: yoi2hot4ya
8. UNIX for Dummies Questions & Answers
I have gone through the search and looked at posting about idle users and killing processes. Here is my question I would like to kill an idle user ( which I can do) but how can I asure that all of his process is also killed whit out tracing his inital start PID. I have tried this on a... (4 Replies)
Discussion started by: larry
9. Filesystems, Disks and Memory
Since I'm fairly new to the scene and don't have much experience in shell programming, I decided to check out the net for a useful script or two.
What I'm looking for is a script that would let me enter a PID and then show the process tree associated with it.
So it would display the (grand-)... (2 Replies)
Discussion started by: velde046
10. UNIX for Dummies Questions & Answers
I don't follow what these are...
this is what my text says...
"When a process is started, a duplicate of that process is created. This new process is called the child and the process that created it is called the parent. The child process then replaces the copy for the code the parent... (1 Reply)
Discussion started by: xyyz
let(1) User Commands let(1)
let - shell built-in function to evaluate one or more arithmetic expressions
Each arg is a separate arithmetic expression to be evaluated.
let evaluates each expr in the current shell environment as an arithmetic expression using ANSI C syntax. Variables names are shell vari-
ables and they are recursively evaluated as arithmetic expressions to get numerical values. let has been made obsolete by the ((...)) syn-
tax of ksh93(1) which does not require quoting of the operators to pass them as command arguments.
ksh returns the following exit values:
0 The value of the last expression is non-zero.
1 The value of the last expression is zero.
ksh93 returns the following exit values:
0 The last expr evaluates to a non-zero value.
>0 The last expr evaluates to 0 or an error occurred.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Availability |SUNWcsu |
ksh(1), ksh93(1), set(1), typeset(1), attributes(5)
SunOS 5.11 2 Nov 2007 let(1)