I was wondering how I can modify this for loop, so it only loops through the filenames that do not have an ".old" extension.
for filename in $(ls "$1")
do
echo $filename | grep '\.old$' > /dev/null
if
then mv $1/$filename $1/$filename.old
fi
done (5 Replies)
I have 2 files one of them has all the all mac addresses and the other one has all the ip addresses. Basically, I want to loop thru those 2 files and generate a configuration like below:
host www184.domain.com {
hardware ethernet 00:13:72:3B:B4:3A;
fixed-address 192.168.0.184;
}... (4 Replies)
function ext
{
echo "THANKS & WELCOME BACK"
}
function upc
{
echo "TO EXPORT UPROC GIVE UPROC NAME PER LINE IN THE input.txt and PRESS Y"
echo "TO GO BACK PRESS 99"
read parm0
if ;
then
start
elif ;
then
for i in `cat input.txt` ; do
echo $i
$UXEXE/uxext upr upr=$i... (0 Replies)
Hi, my script is waiting for 3 files to come to a folder for 30 min but even when all the files arrive in the folder it's still waiting for these three files. Files can come with in 2 min and I want it to start processing them immediately after all the files arrive in the folder.
until ; do... (3 Replies)
sup experts..i had a script which was bugging me..was hoping someone could point out the issue here
Input file: space separated 2 columns
I wanted to print out the 2 columns after assigning them to variables ( bascially the same output but iterate through line by line ). The code worked... (7 Replies)
Hi,
I am trying to move a file from remote server to local server and when the transfer completes successfully i call a script in remote server to remove the file which was successfully transferred.
I do this by first getting the list of file in remote server and move the text file to local... (8 Replies)
Hi,
i=0
t5=6000001
while
do
i=`expr $i + 1`
t5=`expr $t5 + 1`
echo $t5
done
I am able to increment "col3" value but unable to get col1,col2 value.
Input:
t1=10001
t2=abc
t3=ghkc (5 Replies)
Hi,
I have prepared a script to search for backup file information on the Linux server. Script works fine for the most part except the echo statement inside an IF conditional block displays the message ''snapshot directory not found on xxxxx" even though the .snapshot directory is found a... (11 Replies)
Hi Team,
I have for loop in my shell script. Which basically loop through all files in the directory, When some files are in the directory it works just fine.
But if there are no files at all..still the for loop try to execute. Please help. Below is the code.
#!/bin/ksh
echo "Program... (5 Replies)
Hi,
I just have started learning shell scripting (sh). Why do i only get the date?
while read dt
do
echo "Date : ${dt}
sed -n '/${dt}/,/${dt}/p' file1.log | grep -w ERROR
done < date1.dat
INPUT - date1.dat
2019-04-05 04:58:25
2019-04-05 04:58:26
2019-04-05 05:00:56... (3 Replies)
Discussion started by: margel
3 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)