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Full Discussion: Convert into C program
Top Forums Shell Programming and Scripting Convert into C program Post 302426026 by hitmansilentass on Monday 31st of May 2010 10:53:27 AM
Old 05-31-2010
Convert into C program

Hi,

in this forum I was able to find a logic written by perderabo to write packed decimals. the code works fine. However, I would want to convert it to a c program. so as to do that I am not able to understand the below mentioned logic. Can someone please help me understand that?

Code:
if ((packswitch)) ; then
                char1=$dig
                octal=16#${char1}${char2}
                result=${octal#??}
                echo packing $olength $char1 $char2 $octal $result
                output[olength]=$(print -n \\${result})
                ((olength=olength-1))

        else
                char2=$dig
        fi

Link to perderabo's code
 

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PIDOF(8)						Linux System Administrator's Manual						  PIDOF(8)

NAME
pidof -- find the process ID of a running program. SYNOPSIS
pidof [-s] [-x] [-o omitpid] [-o omitpid..] program [program..] DESCRIPTION
Pidof finds the process id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts are located in /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead. OPTIONS
-s Single shot - this instructs the program to only return one pid. -x Scripts too - this causes the program to also return process id's of shells running the named scripts. -o Tells pidof to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro- gram, in other words the calling shell or shell script. NOTES
pidof is simply a (symbolic) link to the killall5 program, which should also be located in /sbin. When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is possible that it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs. SEE ALSO
shutdown(8), init(8), halt(8), reboot(8) AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl 01 Sep 1998 PIDOF(8)
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