12-05-2006
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hi, I have a list of filenames and I want to verify if they all exist. I know "if filename" would do the trick but how do I go about a list of files? thanks (3 Replies)
Discussion started by: mpang_
3 Replies
2. UNIX for Advanced & Expert Users
Hi everybody,
I need to check in C program wether a given login is known on the system. Is there any system function that could do this ?
So far, all I could find is getpwnam(), which answers my problem by parsing the local password database. But won't work if a user is authenticated by... (10 Replies)
Discussion started by: xavier054
10 Replies
3. AIX
Hello
I am having a requirement like if there is no file in the directory then i need a message to pop on after the execution of the script.
My script basically does for File in `ls -t $DIRECTORY | tail -1`;
if there is no file the DIRECTORY then the script is simply exiting with out... (2 Replies)
Discussion started by: dsdev_123
2 Replies
4. Shell Programming and Scripting
Hi
How can I check if the path exist or not?
echo "Enter path:";
read my_path;
##I should check whether my_path exists or not.... (5 Replies)
Discussion started by: tjay83
5 Replies
5. Shell Programming and Scripting
i want to check if the file is in the directory or not, and also it should be handle error conditions, like missing files and report the error and exit.
i did something like this:
file ="hello"
if !test -e "${file}"
then echo "No such files exist!"
exit 1
else
do something.......
fi
... (1 Reply)
Discussion started by: mingming88
1 Replies
6. UNIX for Dummies Questions & Answers
hi guys, im learning so be gentle...
i'm wanting to write a script to read in a customer number.
in order that the code is robust i want to check
1) the length of the value entered (4 characters)
2) that all characters entered are numeric between the values 1 to 3
3) that a value is... (1 Reply)
Discussion started by: skinnygav
1 Replies
7. UNIX for Dummies Questions & Answers
I need to check for the existence of a file *.log in a specific directory using a perl script.
Presently am not in that particular directory.
So i am using chdir ("/path/to/my/file)
And then i am using the -e in an if statement to check if it exists.
if (-e $File) {......}
$File contains the... (1 Reply)
Discussion started by: manutd
1 Replies
8. Shell Programming and Scripting
Hi All,
I want to check existence of variable, whose name gets decided dynamically.
E.g. value of this variable,is derived as $option_"exclude" , where value of option varies depending upon user input.
I am trying to do it in a following way :
set exclude_var = `echo $option"_exclude"`... (3 Replies)
Discussion started by: Rashmee
3 Replies
9. Shell Programming and Scripting
Hi
I have a requirement to check whether the files exists, then it will call other steps in shell script.
I did
ls *.csv|wc -l
if
then checking the count of the files should be more than 1 then it will call other steps.
I am getting the error that too many arguements as there n... (13 Replies)
Discussion started by: cnrj
13 Replies
10. Shell Programming and Scripting
hi
i wanted to check if the file exist or not(multiple files)
DIRE=/home/V478
if ;
then
echo "file present"
else
echo "file not present"
fi
But i am getting the error as
: [: unexpected operator/operand (3 Replies)
Discussion started by: ATWC
3 Replies
LEARN ABOUT DEBIAN
event::rpc::loop
Event::RPC::Loop(3pm) User Contributed Perl Documentation Event::RPC::Loop(3pm)
NAME
Event::RPC::Loop - Mainloop Abstraction layer for Event::RPC
SYNOPSIS
use Event::RPC::Server;
use Event::RPC::Loop::Glib;
my $server = Event::RPC::Server->new (
...
loop => Event::RPC::Loop::Glib->new(),
...
);
$server->start;
DESCRIPTION
This modules defines the interface of Event::RPC's mainloop abstraction layer. It's a virtual class all mainloop modules should inherit
from.
INTERFACE
The following methods need to be implemented:
$loop->enter ()
Enter resp. start a mainloop.
$loop->leave ()
Leave the mainloop, which was started with the enter() method.
$watcher = $loop->add_io_watcher ( %options )
Add an I/O watcher. Options are passed as a hash of key/value pairs. The following options are known:
fh The filehandle to be watched.
cb This callback is called, without any parameters, if an event occured on the filehandle above.
desc
A description of the watcher. Not necessarily implemented by all modules, so it may be ignored.
poll
Either 'r', if your program reads from the filehandle, or 'w' if it writes to it.
A watcher object is returned. What this exactly is depends on the implementation, so you can't do anything useful with it besides
passing it back to del_io_watcher().
$loop->del_io_watcher ( $watcher )
Deletes an I/O watcher which was added with $loop->add_io_watcher().
$timer = $loop->add_timer ( %options )
This sets a timer, a subroutine called after a specific timeout or on a regularly basis with a fixed time interval.
Options are passed as a hash of key/value pairs. The following options are known:
interval
A time interval in seconds, may be fractional.
after
Callback is called once after this amount of seconds, may be fractional.
cb The callback.
desc
A description of the timer. Not necessarily implemented by all modules, so it may be ignored.
A timer object is returned. What this exactly is depends on the implementation, so you can't do anything useful with it besides passing
it back to del_io_timer().
$loop->del_timer ( $timer )
Deletes a timer which was added with $loop->add_timer().
DIRECT USAGE IN YOUR SERVER
You may use the methods of Event::RPC::Loop by yourself if you like. This way your program keeps independent of the actual mainloop module
in use, if the simplified interface of Event::RPC::Loop is sufficient for you.
In your server program you access the actual mainloop object this way:
my $loop = Event::RPC::Server->instance->get_loop;
Naturally nothing speaks against making your program to work only with a specific mainloop implementation, if you need its features. In
that case you may use the corresponding API directly (e.g. of Event or Glib), no need to access it through Event::RPC::Loop.
AUTHORS
Joern Reder <joern at zyn dot de>
COPYRIGHT AND LICENSE
Copyright (C) 2002-2006 by Joern Reder, All Rights Reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2006-04-23 Event::RPC::Loop(3pm)