Hi,
I have given the following statement in a script to put the values of variables (VAR1, VAR2,...) in a file.
echo " $VAR1 $VAR2 $VAR3 $VAR4 $VAR5" >> filename
But the output is not coming properly. Variables VAR5, VAR4 are replacing the first (VAR1, VAR2,..). I can't... (5 Replies)
echo "XXXXX" >> /xx/output.txt
cat /xx/file.txt| awk '{tony=tony+$1+$2; print tony/$3*100}' >> /xx/output.txt
Dear all,
In this situation i will have 2 lines in the output file. What i want is to have only one output line. e.g: XXXXX "value"
HOW to put the output of the "cat and awk" in... (1 Reply)
Hi
I am using tcsh.
I want display in a file_1 like this.
$VARIBALE
I gave in a termianl
> echo "\$VARIBALE" > file_1
Its not workning.
It was giving VARIBALE: Undefined variable.
I gave \ before $, but why it was giving undefined varible?
Please help me.
Thanks in advance (4 Replies)
Hi All,
Hope someone can advise here as I have been struggling to find a syntax that works here. I have tried a stack of combination I have seed in the forums but I think because I have needed to use "" and `` in the statments another method is found.
I am reading in lines with the following... (1 Reply)
Hello all,
Please help with the below.
I have a requirement where in I have to read a pattern and print it as shown below.
Patterns will be as below.
Input Output
Pattern Should be printed as below with spaces such that I can awk.
-*--* - * - - *
*--**... (2 Replies)
I am new to the c shell script, can you let me know why the set rr= is not working.
C shell script
#! /bin/csh
Set tt= 12345_UMR_BH452_3_2.txt
set rr='echo $tt | cut –d”_” -f1'
syntax error (4 Replies)
Hi,
I am cutting data from a fixed length test file and then writing out a new record using the echo command, the problem I have is how to stop multiple spaces from being written to the output file as a single space.
Example:
cat filea | while read line
do
field1=`echo $line | cut -c1-2`
... (6 Replies)
hi all
i have little problem below is my shell script
a=`sqlplus fss_cst/fss_cst@dolp1 << EOF
SET PAGESIZE 0 FEEDBACK OFF TRIMOUT ON;
select process from lfs$ta_process where valid_to_dat=to_date('9/16/2010','mm/dd/yyyy');
EOF`
echo ${SQL}
the script name is test2.sh
when i execute... (5 Replies)
Hey all! I'm in an intro to UNIX class at university, and we've just began writing scripts. Naturally I can't get it to do what I want.
Basic script as follows:
COMPARE1=`ls|wc -l`
tar czf archive.tgz ~/path/to/file
COMPARE2=`tar tvzf archive.tgz|wc -l`
if
then
... (7 Replies)
Discussion started by: nickzourdos
7 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)