Shell Scripting - Select multiple files from numbered list
I am trying to have the user select two files from a numbered list which will eventually be turned into a variable then combined. This is probably something simple and stupid that I am doing.
Hi there, just wondered if somebody could help me with a problem I have
I have a program that when run from the command line will output a list of objects
# list_servers
server1
server5
server7
server8
#
I just wanted to know, in perl, how can i make each line of output from... (4 Replies)
Hi,
I would like to write a for loop that does the following:
I have a file called X.txt and other files called 1.txt,2.txt, .....,1000.txt.
I want to substitute the 6th column of the file X.txt with 1.txt and store the output as X.1. Then I want to do the same with X.txt and 2.txt and store... (0 Replies)
Hi,
I have some hundreds/thousands of files named logX.dat, where X can be any integer, and they are sequential, X ranges between 1 and any number:
log1.dat log2.dat log3.dat log6.dat log10.dat ... log6000.dat
I would like to rename them to
scatter_params_0001.dat... (6 Replies)
Hi,
I've a list of files
ac_info.tps, subscription_array.tps, .......and many other files
one of the file, bin_range_list.tps has the following content
CREATE OR REPLACE TYPE "BIN_RANGE_LIST" AS TABLE OF BIN_RANGE_ELEM;
/
grant execute on... (4 Replies)
I copied the below program to play around with displaying a list of items using the select command in ksh. When I put all items in the same line, it works fine. I am trying to use multiple lines instead of a single row...my list is too large for a single line. How do I get the line continuation... (3 Replies)
I have about 6000 files of the following format (three simplified examples shown; actual files have variable numbers of columns, but the same number of lines). I would like to concatenate the ID (*Loc*) and data lines, but not the others, as shown below. The result would be one large file (or... (3 Replies)
I have a text file in this format
Some lines....
Question no: 1
The question?
A. Answer 1
B. Answer 2
C. Answer 3
D. Answer 4
Answer:B
Some lines....
Question no: 2
The question? (choose 2) (10 Replies)
Hi,
I am trying to script the below, but I am not very good at it :(
Your help would be greatly appreciated.
1. read all files in the directory in strings
strings *.*
2. in each file, for each line that contains "ABCD", store characters located at position 521 and 522 of this line... (9 Replies)
Hello All,
just wanted to export multiple tables from oracle sql using unix shell script to csv file and the below code is exporting only the first table.
Can you please suggest why? or any better idea?
export FILE="/abc/autom/file/geo_JOB.csv"
Export= `sqlplus -s dev01/password@dEV3... (16 Replies)
Discussion started by: Hope
16 Replies
LEARN ABOUT DEBIAN
coro::select
Select(3pm) User Contributed Perl Documentation Select(3pm)NAME
Coro::Select - a (slow but coro-aware) replacement for CORE::select
SYNOPSIS
use Coro::Select; # replace select globally (be careful, see below)
use Core::Select 'select'; # only in this module
use Coro::Select (); # use Coro::Select::select
DESCRIPTION
This module tries to create a fully working replacement for perl's "select" built-in, using "AnyEvent" watchers to do the job, so other
threads can run in parallel to any select user. As many libraries that only have a blocking API do not use global variables and often use
select (or IO::Select), this effectively makes most such libraries "somewhat" non-blocking w.r.t. other threads.
This implementation works fastest when only very few bits are set in the fd set(s).
To be effective globally, this module must be "use"'d before any other module that uses "select", so it should generally be the first
module "use"'d in the main program. Note that overriding "select" globally might actually cause problems, as some "AnyEvent" backends use
"select" themselves, and asking AnyEvent to use Coro::Select, which in turn asks AnyEvent will not quite work.
You can also invoke it from the commandline as "perl -MCoro::Select".
To override select only for a single module (e.g. "Net::DBus::Reactor"), use a code fragment like this to load it:
{
package Net::DBus::Reactor;
use Coro::Select qw(select);
use Net::DBus::Reactor;
}
Some modules (notably POE::Loop::Select) directly call "CORE::select". For these modules, we need to patch the opcode table by sandwiching
it between calls to "Coro::Select::patch_pp_sselect" and "Coro::Select::unpatch_pp_sselect":
BEGIN {
use Coro::Select ();
Coro::Select::patch_pp_sselect;
require evil_poe_module_using_CORE::SELECT;
Coro::Select::unpatch_pp_sselect;
}
BUGS
For performance reasons, Coro::Select's select function might not properly detect bad file descriptors (but relying on EBADF is inherently
non-portable).
SEE ALSO
Coro::LWP.
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://home.schmorp.de/
perl v5.14.2 2012-04-13 Select(3pm)