12-08-2008
$$ is the process ID of the current script.
It is a way of generating temporary file names which won't clash with other similar processes running at the same time. It is not suitable for files you want to keep for any length of time because process IDs get re-used. It is customary to delete such workfiles after use from within the script.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
:start
/@~/{
h
s/\(.*\)@~.*$/\1/
s/@~$//
s/@~/\
/g
p
g
s/.*@~\(.*\)/\1/
}
//{
N
s/\n/ /
b start
} (2 Replies)
Discussion started by: djkane
2 Replies
2. Programming
Hello all,
i've written a small piece of code that will read commands from standard input and executes the commands.
Its working fine and is execting the commands well. Accepting arguments too. e.g
#mkdir <name of the directory>
The problem is that its not letting me change the directory i.e... (4 Replies)
Discussion started by: Phrozen Smoke
4 Replies
3. Shell Programming and Scripting
I want to log into a remote server transfer over a new config and then backup the existing config, replace with the new config.
I am not sure if I can do this with BASH scripting.
I have set up password less login by adding my public key to authorized_keys file, it works.
I am a little... (1 Reply)
Discussion started by: bash_in_my_head
1 Replies
4. UNIX for Dummies Questions & Answers
Is it possible for both commands to work? (1 Reply)
Discussion started by: phunkypants
1 Replies
5. Shell Programming and Scripting
cur_fy=`grep "CONSOL" $GLDATA/parms/cur_fiscalyear.lis | awk '{print $2}'
Here i don't understand "CONSOL" and awk'{print$2)
Please help me out
cur_fiscalyear.lis contents :
DL 2011
MOL 2011
MV 2011
SF 2010
CONSOL 2011
MVU 2011 (3 Replies)
Discussion started by: Diddy
3 Replies
6. Shell Programming and Scripting
cat $BDDATA/svucon$i_bal_dup_email.dat ; uuencode $dup_in $dup_out
here svucon$i_bal_dup_email.dat ???
and uuencode ??
Please use and tags when posting code, data or logs etc. to preserve formatting and enhance readability, thanks. (2 Replies)
Discussion started by: Diddy
2 Replies
7. Shell Programming and Scripting
Dear unix team
i'm user for a system build on unix system ,so we need to run a lot of scripts not in one sission but every script on the associated terminal , so the script name = the name of the terminal which will run this script on it . and someone create a batch that make as below :
1- but... (4 Replies)
Discussion started by: fofatoti
4 Replies
8. Shell Programming and Scripting
why the case 2 will happen ? , ' should stop the history substitution ,shouldn't it?
case 1
# echo "123"|sed '/123/!d'
123
case 2
# echo "123
> 456
> 1
> "|sed '/123/!d'
-bash: !d': event not found
case 3
# echo "123
> 456
> 12
> "|sed '/123/'\!d
123
# bash --version (1 Reply)
Discussion started by: justlooks
1 Replies
9. UNIX for Dummies Questions & Answers
Could you please tell the meaning of Below mentioned perl script lines:
format OWNER_TOTAL =
@< Owner Code @<<<<<<total: @#######.## @#######.## @#######.## @#######.## @#######.## @#######.## @#######.## @#######.## @#######.## @#######.## @######
#.##
$prev_cust_type, $prev_owner_code,... (2 Replies)
Discussion started by: vinothrajan55
2 Replies
10. UNIX for Dummies Questions & Answers
Hi friends! I'm learning UNIX and I have a small question. Working with Shell, i put the name of one executable (in c language) + one number and it says this:
$ gcc misterioso_4.c
$ ./misterioso_4 6
got: ,
I can not find an answer in the manual because I havent applied any variable.... (5 Replies)
Discussion started by: dakota
5 Replies
LEARN ABOUT CENTOS
killall5
KILLALL5(8) Linux System Administrator's Manual KILLALL5(8)
NAME
killall5 -- send a signal to all processes.
SYNOPSIS
killall5 -signalnumber [-o omitpid[,omitpid..]] [-o omitpid[,omitpid..]..]
DESCRIPTION
killall5 is the SystemV killall command. It sends a signal to all processes except kernel threads and the processes in its own session, so
it won't kill the shell that is running the script it was called from. Its primary (only) use is in the rc scripts found in the /etc/init.d
directory.
OPTIONS
-o omitpid
Tells killall5 to omit processes with that process id.
NOTES
killall5 can also be invoked as pidof, which is simply a (symbolic) link to the killall5 program.
EXIT STATUS
The program return zero if it killed processes. It return 2 if no process were killed, and 1 if it was unable to find any processes
(/proc/ is missing).
SEE ALSO
halt(8), reboot(8), pidof(8)
AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl
04 Nov 2003 KILLALL5(8)