Need help on making a loop script base on what is inside a file...
File to read: List.txt
List.txt contains below w/c are file name as well:
SAMPLEa
SAMPLEb
SAMPLEc
SAMPLEd
SAMPLEe
SAMPLEf
.
.
.
Want to make a loop that will manipulate those that are inside the file.txt w/c are... (3 Replies)
To make it clearer:
I have a file, List.txt
List.txt contains: (these are actually splitted files w/c I got from ls command and dump them to the List.txt file)
SAMPLEa
SAMPLEb
SAMPLEc
SAMPLEd
SAMPLEe
SAMPLEf
.
.
.
.
.
And I want to rename these files to have a .dat extension.... (3 Replies)
I am trying to take input from a file and direct it into a bash script. This script is meant to be a foreach loop. I would like the script to process each item in the list one by one and direct the output to a file.
# cat 1loop
#!/bin/bash
# this 2>&1 to redirect STDERR & STDOUT to file... (4 Replies)
can you make me an awk script that will:
read the 1st record from each input file, file1 file2 file3 file4 and file5 and write them to file6.
then.....
read the 2nd record from each input file, file1 file2 file3 file4 and file5 and append them to file6.
then.....
read the 3rd record... (1 Reply)
By "many many times" I mean the times the input file is to be processed is unknown beforehand, it will be known when awk finishes processing the input file for the first time.
So my question is: how to start over again from the first record of the input file when AWK finishes processing the... (7 Replies)
until
do
read -p "Invalid cars. Try againa" cars1
done
Ok i have the above code, im getting users input and if it doesnt match in the file the user has to try again untill its correct
But when i run this it gives me an error saying
./Cars.bash: line 43: (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
A) Write a script, which will take input from a file and convert the number from Centigrade to Fahrenheit... (5 Replies)
I have files named with different prefixes. From each I want to extract the first line containing a specific string, and then print that line along with the prefix.
I've tried to do this with a while loop, but instead of printing the prefix I print the first line of the file twice.
Files:... (3 Replies)
Hi All,
We've a VDI infrastructure in AWS (AWS workspaces) and we're planning to automate the process of provisioning workspaces. Instead of going to GUI console, and launching workspaces by selecting individual users is little time consuming. Thus, I want to create them in bunches from AWS CLI... (6 Replies)
Discussion started by: arun_adm
6 Replies
LEARN ABOUT DEBIAN
io::async::signal
IO::Async::Signal(3pm) User Contributed Perl Documentation IO::Async::Signal(3pm)NAME
"IO::Async::Signal" - event callback on receipt of a POSIX signal
SYNOPSIS
use IO::Async::Signal;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $signal = IO::Async::Signal->new(
name => "HUP",
on_receipt => sub {
print "I caught SIGHUP
";
},
);
$loop->add( $signal );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a particular POSIX signal is received.
Multiple objects can be added to a "Loop" that all watch for the same signal. The callback functions will all be invoked, in no particular
order.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_receipt
Invoked when the signal is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
name => STRING
The name of the signal to watch. This should be a bare name like "TERM". Can only be given at construction time.
on_receipt => CODE
CODE reference for the "on_receipt" event.
Once constructed, the "Signal" will need to be added to the "Loop" before it will work.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Signal(3pm)