Please help with the following fork code..with complete explanation Post: 302362920

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Need explanation for the syntax(code)

Hi I am new to shell script programming... want to know the process of the following: if then echo "$0: missing argument for option(s) :$MISSINGOPTARG" echo "usage" $USAGE" exit 1 fi

2. Shell Programming and Scripting

AWK deifnition and some small code explanation

Could someone give me a quick simple explanation for the AWK command. And also help me to explain the code i have made. I have made some general comments about it myself. I was wondering if people could help me with the rest: awk -F'' 'END { fmt = "%-20s\t%s\t%s\n" ...

3. Shell Programming and Scripting

nawk code explanation

Hi I have a line/command which greps certain pattern () from the file and 22 lines AFTER that: nawk '/\/{c=22}c&&c--' input_file Can somebody explain the coding in this command (what " c&&c-- " does)? and how to modify this command to output 22 lines BEFORE this pattern () Thanks a lot ...

4. Programming

Help me complete my code.

Ok, so I have done the 'mathematical part' just I am not sure where to put them in and how to get them to return answers. public class Main { public static void main(String args) { } //Part A. //1&2- Computes the sum andproduct of all of the elements of the array a. ...

5. Shell Programming and Scripting

code explanation

Can you please explain the following code plz? my_cd=' ' while getopts :e: OPTION; do case "$OPTION" in e) my_cd ="$OPTARG";; esac done if ; then echo " >>> ERROR - I am wrong" echo " >>> ERROR - Hello" exit 99 fi What I don't understand is what is OPTION or...

6. UNIX for Dummies Questions & Answers

Explanation of NAWK Code

Hi all, I need your help in understanding the meaning and syntax of the below nawk line. Here is an extract of a script which I use daily and works well. The script extracts the hostnames and messages within a syslog file. I would also like to extract the message time in the 3rd column by...

7. UNIX for Dummies Questions & Answers

Code explanation?

I need someone to tell me how exactly works the following code αfter /etc/passwd :eek:: cat /etc/passwd|grep "^:"|sed '1,$s/^$*$:*:$*$:.*$/ \1 \2 /'|sort -nrk3 -t:I want a good explanation to understand the code please

8. Homework & Coursework Questions

Minix 3 Source Code Organisation Explanation

1. I've been asked to provide a detailed description on how Minix's source code is organised. This may sound slightly simple, but what exactly am I to refer to when explaining? Any documents that would provide assistance to understand whats being asked? Thanks 2. Not applicable: 3....

9. Shell Programming and Scripting

Need explanation on Perl Fork

Hi, I am breaking my head to understand the below line of code in perl: next if $pid = fork; # Parent goes to next server. die "fork failed: $!" unless defined $pid; Can anyone please explain me in detail as I am a slow learner? Thanks, Ali.

10. Shell Programming and Scripting

ksh code explanation

Hi. Can somebody please explain the following lines of KSH code for me? The code checks all sub directories in a specific location which are numbered (E.g. test_01, test_02 ... etc.), then finds the one with highest number and extracts that number from the dir name into the variable num. I'd just...

LEARN ABOUT CENTOS

err_get_func

ERR_GET_LIB(3)							      OpenSSL							    ERR_GET_LIB(3)

NAME

       ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library, function and reason code

SYNOPSIS

	#include <openssl/err.h>

	int ERR_GET_LIB(unsigned long e);

	int ERR_GET_FUNC(unsigned long e);

	int ERR_GET_REASON(unsigned long e);

DESCRIPTION

       The error code returned by ERR_get_error() consists of a library number, function code and reason code. ERR_GET_LIB(), ERR_GET_FUNC() and
       ERR_GET_REASON() can be used to extract these.

       The library number and function code describe where the error occurred, the reason code is the information about what went wrong.

       Each sub-library of OpenSSL has a unique library number; function and reason codes are unique within each sub-library.  Note that different
       libraries may use the same value to signal different functions and reasons.

       ERR_R_... reason codes such as ERR_R_MALLOC_FAILURE are globally unique. However, when checking for sub-library specific reason codes, be
       sure to also compare the library number.

       ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are macros.

RETURN VALUES

       The library number, function code and reason code respectively.

SEE ALSO

       err(3), ERR_get_error(3)

HISTORY

       ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in all versions of SSLeay and OpenSSL.

1.0.1e								    2013-02-11							    ERR_GET_LIB(3)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Need explanation for the syntax(code)

Discussion started by: chandhar

2. Shell Programming and Scripting

AWK deifnition and some small code explanation

Discussion started by: amatuer_lee_3

3. Shell Programming and Scripting

nawk code explanation

Discussion started by: aoussenko

4. Programming

Help me complete my code.

Discussion started by: HardyV2