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Top Forums UNIX for Advanced & Expert Users PPID differs in script and prompt Post 302439310 by alexalex1 on Thursday 22nd of July 2010 08:44:54 AM
Old 07-22-2010
PPID differs in script and prompt

I tried several times to get answer to the below problem. Someone can please help me?

Code:
[tmp]$ cat p1.sh
#!/bin/sh

`./c1.sh &`

while [ 10 -le 11 ]  # indefinite loop
do
       x=5;
done

[tmp]$ cat c1.sh [/B] # sleep for 10 sec and exit
#!/bin/sh
sleep 10;

Execute P1 as ./p1 &

Code:
[ tmp]$ ps -eaf | grep c1
pp1   20487     1  0 22:37 pts/14   00:00:00 /bin/sh ./c1.sh

[ tmp]$ ps -eaf | grep p1
pp1   20485 19920  6 22:37 pts/14   00:00:00 /bin/sh ./p1.sh

(1) Why does the PPID of c1.sh has been assigned to 1? Why can't it be PID of p1.sh? Thanks in advance

Last edited by pludi; 07-22-2010 at 09:51 AM.. Reason: code tags, please...
 

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BZEXE(1)						      General Commands Manual							  BZEXE(1)

NAME
bzexe - compress executable files in place SYNOPSIS
bzexe [ name ... ] DESCRIPTION
The bzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``bzexe /bin/cat'' it will create the following two files: -r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat -r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~ /bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file. You can remove /bin/cat~ once you are sure that /bin/cat works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
bzip2(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some other utilities (tail, chmod, ln, sleep). BUGS
bzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. BZEXE(1)
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