I want to search a file for a string and then if the string is found I need the line that the string is on - but also the previous two lines from the file (that the pattern will not be found in)
This is on solaris
Can you help? (2 Replies)
Hello i'm writting a krn shell that will find the letter F and I would like to grab everything from F till 0:00. Is there a sed or awk command that i could use.
Thank you. File is looks like this.
11/12 xxx xxxx xxx F xxxx xxxx
some info entered here
some info entered here
xxxx... (1 Reply)
Hi All, I really need your help. I am a begginner in shell script and I believe this is a very simple issue.
I have in my directory, n-files, like 1.dhm, 2.dhm, 3.dhm.
These files have 1 column with 1 value per line, like:
1.dhm
------
10
20
30
40
50
2.dhm
------
30
50
20 (3 Replies)
#!/bin/sh
who
echo "\r"
echo Enter the terminal ID of the user in use:
echo "\r"
read TERM_ID
echo "\r"
ps -t $TERM_ID | grep sh
echo "\r"
echo Enter the process number to end:
echo "\r"
read PID
echo "\r"
kill -9 $PID
What this code does is ultimately grab the PID of a users sh... (6 Replies)
Hi, I need some help with a script I'm trying to write. I have a log file containing references to a number of different webservices. I wish to write a script that will list the webservices with a count as to how many times they appear in the log.
An example of the log file content:
... (2 Replies)
Hi guys!
I'm new to scripting and I need to write a script in awk.
Here is example of file on which I'm working
ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00
ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00
ATOM 4690 CD ... (18 Replies)
How do I capture an error for any command I use.
For e.g if i try to zip a file and the file is not there. The regualr $? -gt 0 only tells its un-successful but won't tell me that the file is not there when I run through a script. How can I capture this error?
for e.g.. zip $x.zip $x... (1 Reply)
awk 'NR>=5034&&/Max/{++c}c==3{o=$0 RS $0 RS $0; print o; c=0}' logfile
i would like to modify the above awk command to instead show lines that are the most frequent:
for instance, given a log file containing:
Warning MaxClient is having issues - please
MaxClients java error...yams... (4 Replies)
Hi all,
I want to set up a script to email a person to confirm another program is running but i wish to avoid having to customise the script for each individiual.
I am ok with what i need to do except i need to get the first and last name of the user to construct an email address to send to.... (6 Replies)
Sorry for the weird title but i have the following problem.
We have several files which have between 10000 and about 500000 lines in them. From these files we want to remove lines which contain a pattern which is located in another file (around 20000 lines, all EAN codes). We also want to get... (28 Replies)
Discussion started by: SDohmen
28 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)