Hi,
I want to write bash script that will keep on looking for files in a directory and if any file exists, it processes them. I want it to be a background process, which keeps looking for files in a directory.
Is there any way to do that in bash script?
I can loop through all the files like... (4 Replies)
hi
i have two files
cat input.txt
123456| 43256
456482|5893242
cat data.txt
xv 123456 abcd dsk
sd 123456 afsfn dd
df 43256 asdf ff
ss 456482 aa
sf 5893242 ff ff
aa 5893242 aa aa
i need to read inputs from input.txt and find data for data.txt.
then i need to print them as a... (2 Replies)
I have a script to GREP for a text expression within certain files, the files being named file.11012008 thru file.11302008. 30 files in all, one for each day of the month.
Instead of entering the following 3 lines of code 30 different times, I'm trying to find a way to loop the process:
... (6 Replies)
hi all
i have some files present in a directory
i want to loop through all the files in the directory
each time i loop
i should change the in_file parameter in the control file and load it into a table using sql loader
there is only one table where i have to load alll the files ... (3 Replies)
Hi,
I need to write a script that copies all .zip files in the subdirectories of ~100 folders. No clue how to write a loop that goes into each folder, searches for a .zip file, and copies it and extracts it to a unique location.
I imagine something like
cp -f /home/folder1/*.zip... (6 Replies)
Hi,
i need to write a shell script where i have to loop through all the file in a directory and rename them based on below condition.
file1.dat
file2.dat
file3.dat
the above files has to be moved to another directory like below
file1_201001.dat
file2_201002.dat
file3_201003.dat... (3 Replies)
Hi,
I have a small query when comparing two files with awk. I have a small piece of code running in a shell. See below:
gawk -F"," 'NR == FNR { A=1; next } \!A' OFS="," 2011.csv 2012.csv > diff_2012.csv
The code works fine (Note I had to escape the ! with \! to run in shell). What I want... (6 Replies)
Hi, I have a large number of files which are numbered numerically, i.e. of the type
1.usr, 2.usr, 3.usr ... This is what I'd like to do:
1. In ascending order, use awk to read a value from each file.
2. Write this value to another file (say data.txt). This file, 'data.txt' should be... (4 Replies)
Discussion started by: lost.identity
4 Replies
LEARN ABOUT DEBIAN
io::async::pid
IO::Async::PID(3pm) User Contributed Perl Documentation IO::Async::PID(3pm)NAME
"IO::Async::PID" - event callback on exit of a child process
SYNOPSIS
use IO::Async::PID;
use POSIX qw( WEXITSTATUS );
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $kid = $loop->fork(
code => sub {
print "Child sleeping..
";
sleep 10;
print "Child exiting
";
return 20;
},
);
print "Child process $kid started
";
my $pid = IO::Async::PID->new(
pid => $kid,
on_exit => sub {
my ( $self, $exitcode ) = @_;
printf "Child process %d exited with status %d
",
$self->pid, WEXITSTATUS($exitcode);
},
);
$loop->add( $pid );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a process exits.
For most use cases, a IO::Async::Process object provides more control of setting up the process, connecting filehandles to it, sending data
to and receiving data from it.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_exit $exitcode
Invoked when the watched process exits.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
pid => INT
The process ID to watch. Must be given before the object has been added to the containing "IO::Async::Loop" object.
on_exit => CODE
CODE reference for the "on_exit" event.
Once the "on_exit" continuation has been invoked, the "IO::Async::PID" object is removed from the containing "IO::Async::Loop" object.
METHODS
$process_id = $pid->pid
Returns the underlying process ID
$pid->kill( $signal )
Sends a signal to the process
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::PID(3pm)