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)
folks,
In my working directory, there a multiple large files which only contain one line in the file. The line is too long to use "grep", so any help?
For example, if I want to find if these files contain a string like "93849", what command I should use?
Also, there is oder_id number... (1 Reply)
I'm not a unix guy so excuses my ignorance... I'm the database ETL guy.
I'm trying to be proactive and devise a plan B for a ETL process where I expect a file 10X larger than what I process daily for a recast job. The ETL may handle it but I just don't know.
This file may need to be split... (3 Replies)
I want a shell script that will traverse a file system starting at specific path.
And look at all file names for repeating sequences of and remove them from the file name.
The portion of the name that gets removed has to be a repeating sequence of the same characters.
So the script would... (3 Replies)
I want to extract the last rows of a data file, similar to that one below:
C1 xxx
C2 rrr
C3 ttt
....
Cn-1 hhh
Cn bbb
C1 yyy
C2 sss
C3 uuu
...
Cn-1 iii
Cn ccc
...
I just want to extract the final rows between C1 and Cn at each data file. n is not a constant,... (2 Replies)
I tried searching the forums, but couldn't find anything relevant to my question.
I have an xml file like the following:
<topLevel numberBlock="BLOCK1">
<item="content1" title="Content 1">
<RefPath="path/to/file1.txt />
</item>
<item"content2" title="Content 2" >... (4 Replies)
I am a newbie and what I have is a captured file of content. I want to be able to grab 2 pieces of data, multiple times and print them to the screen.
DataFile
owner: locke
user: fun
data size: 60
location: Anaheim
owner: david
user: work
data size: 80
location: Orange
my script... (2 Replies)
in my file which is a rather long log file it contains many text and tables and there is one table with 15 columns and I am interested to read in the value in column6 and its corresponding value in column2. Trouble is I do not know how to script it as the line number various between different log... (8 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)
im using the following code to grab data, but after the data in the range im specifying has been grabbed, i want to count how many instances of a particular pattern is found?
awk 'BEGIN{count=0} /parmlib.*RSP/,/seqfiles.*SSD/ {print; count++ } /103 error in ata file/ END { print count }'... (3 Replies)
Discussion started by: SkySmart
3 Replies
LEARN ABOUT DEBIAN
io::async::test
IO::Async::Test(3pm) User Contributed Perl Documentation IO::Async::Test(3pm)NAME
"IO::Async::Test" - utility functions for use in test scripts
SYNOPSIS
use Test::More tests => 1;
use IO::Async::Test;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
testing_loop( $loop );
my $result;
$loop->do_something(
some => args,
on_done => sub {
$result = the_outcome;
}
);
wait_for { defined $result };
is( $result, what_we_expected, 'The event happened' );
...
my $buffer = "";
my $handle = IO::Handle-> ...
wait_for_stream { length $buffer >= 10 } $handle => $buffer;
is( substr( $buffer, 0, 10, "" ), "0123456789", 'Buffer was correct' );
DESCRIPTION
This module provides utility functions that may be useful when writing test scripts for code which uses "IO::Async" (as well as being used
in the "IO::Async" test scripts themselves).
Test scripts are often synchronous by nature; they are a linear sequence of actions to perform, interspersed with assertions which check
for given conditions. This goes against the very nature of "IO::Async" which, being an asynchronisation framework, does not provide a
linear stepped way of working.
In order to write a test, the "wait_for" function provides a way of synchronising the code, so that a given condition is known to hold,
which would typically signify that some event has occured, the outcome of which can now be tested using the usual testing primitives.
Because the primary purpose of "IO::Async" is to provide IO operations on filehandles, a great many tests will likely be based around
connected pipes or socket handles. The "wait_for_stream" function provides a convenient way to wait for some content to be written through
such a connected stream.
FUNCTIONS
testing_loop( $loop )
Set the "IO::Async::Loop" object which the "wait_for" function will loop on.
wait_for( $condfunc )
Repeatedly call the "loop_once" method on the underlying loop (given to the "testing_loop" function), until the given condition function
callback returns true.
To guard against stalled scripts, if the loop indicates a timeout for 10 consequentive seconds, then an error is thrown.
wait_for_stream( $condfunc, $handle, $buffer )
As "wait_for", but will also watch the given IO handle for readability, and whenever it is readable will read bytes in from it into the
given buffer. The buffer is NOT initialised when the function is entered, in case data remains from a previous call.
$buffer can also be a CODE reference, in which case it will be invoked being passed data read from the handle, whenever it is readable.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Test(3pm)