I have a if condition it checks its pid exist it means it is running, otherwise not running.
I am checking with ps
Above code is giving integer error, because currently process of java is not running so its value is zero, so how i can i do that to check process exist then tell us process exist, otherwise tell us process not exist.
hi i am new to c programming and found this on the net could someone tell me what it actually does, many thanks in advance cheers
#include <fcntl.h>
main()
{
int fd;
fd = open("in1", O_RDONLY);
printf("%d\n", fd);
}
and this too please
#include <fcntl.h>
main()
{
int... (1 Reply)
Hi All,
Please help me in the following query
need a command to get all the files in the present directory except the next day file
format :: abc_<DD>.log
$ls -l
abc_10.log
abc_10.log
abc_11.log
Now i need the output in abc.list which should contains
$more abc.list
abc_10.log... (5 Replies)
Hi
i have a variable with lots of tokens seperated with spaces.
e.g VAR="ABC DEF GHSD GHQS TUTSD JHDTQ QDHQ CDQKDGQ WQUTQD DQUTQD DQJGDQ QDTQD WDQUTQDU QDUGQD QDJGQD DQUTDUQ QDUIDTQ"
i want to separate all of the above tokens and call a script with each of the token e.g sh script.sh <TOKEN>... (4 Replies)
Hello guys I am new to awk programming. I need the below required script which can perform the following.
I have a file containing below data.
SNA NoCRD = 131
SNA OBarr = 3
SNC NoCRD = 76
SNC OBarr = 1
SND NoCRD = 155
SND OBarr = 5
SNE NoCRD = 100
SNE OBarr = 1
SNF NoCRD = 131
SNF... (2 Replies)
Below is my code which gives output like this: Every time we have to open the script file and change the value of TG in BEGIN. what i want to do is
that i give two three values at the sametime and then run the script and
it gives output one by one at the same time.
I think i have to define... (2 Replies)
My data is something like shown below.
date1 date2 aaa bbbb ccccc
date3 date4 dddd eeeeeee ffffffffff ggggg hh
I want the output like this
date1date2 aaa eeeeee
I serached in the forum but didn't find the exact matching solution. Please help. (7 Replies)
Executed the following if conditions .. and got different results .
only (( )) gave correct o/p with all scenarios .
Can anybody please let me know what is the difference between and ] and ((condition)) when used with if condition.
And why each condition gave different result.
1.... (2 Replies)
hi,
I have some problems in my simple script about the redirect echo stdout command inside a condition. Why is the echo command inside the elif still execute in the else command
Here are my simple script
After check on the two diff output the echo stdout redirect is present in two diff... (3 Replies)
Input file (4 DATA record shown in this case):
DATA AA0110
ACCESSION AA0110
VERSION AA0110 GI:157412239
FEATURES Location/Qualifiers
length 1..1170
1..1700
/length="1170"
position ... (5 Replies)
HI
My doubt may be basic one but I need to get it clarified..
When i use "if" condition that checks for many AND, OR logical conditions
like
if ]; then
return 0
fi
Even the if condition fails it returns as zero.. Any clue..
But if i add else condition like
if ]; ... (2 Replies)
Discussion started by: Priya Amaresh
2 Replies
LEARN ABOUT DEBIAN
file::pid
File::Pid(3pm) User Contributed Perl Documentation File::Pid(3pm)NAME
File::Pid - Pid File Manipulation
SYNOPSIS
use File::Pid;
my $pidfile = File::Pid->new({
file => '/some/file.pid',
});
$pidfile->write;
if ( my $num = $pidfile->running ) {
die "Already running: $num
";
}
$pidfile->remove;
DESCRIPTION
This software manages a pid file for you. It will create a pid file, query the process within to discover if it's still running, and remove
the pid file.
new
my $pidfile = File::Pid->new;
my $thisfile = File::Pid->new({
file => '/var/run/daemon.pid',
});
my $thisfileandpid = File::Pid->new({
file => '/var/run/daemon.pid',
pid => '145',
});
This constructor takes two optional paramters.
"file" - The name of the pid file to work on. If not specified, a pid file located in "File::Spec->tmpdir()" will be created that matches
"(File::Basename::basename($0))[0] . '.pid'". So, for example, if $0 is ~/bin/sig.pl, the pid file will be /tmp/sig.pl.pid.
"pid" - The pid to write to a new pidfile. If not specified, $$ is used when the pid file doesn't exist. When the pid file does exist, the
pid inside it is used.
file
my $pidfile = $pidfile->file;
Accessor/mutator for the filename used as the pid file.
pid
my $pid = $pidfile->pid;
Accessor/mutator for the pid being saved to the pid file.
write
my $pid = $pidfile->write;
Writes the pid file to disk, inserting the pid inside the file. On success, the pid written is returned. On failure, "undef" is returned.
running
my $pid = $pidfile->running;
die "Service already running: $pid
" if $pid;
Checks to see if the pricess identified in the pid file is still running. If the process is still running, the pid is returned. Otherwise
"undef" is returned.
remove
$pidfile->remove or warn "Couldn't unlink pid file
";
Removes the pid file from disk. Returns true on success, false on failure.
program_name
This is a utility method that allows you to determine what "File::Pid" thinks the program name is. Internally this is used when no pid file
is specified.
SEE ALSO
perl.
AUTHOR
Casey West, <casey@geeknest.com>.
COPYRIGHT
Copyright (c) 2005 Casey West. All rights reserved.
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.8.8 2008-04-05 File::Pid(3pm)