Just add both of these lines and these "damn spaces" won't bother you any more:
That will not work at all. The entire output of the find command substitution will not undergo field splitting, resulting in one long word containing possibly many pathnames.
If there is no field splitting (whether because IFS is empty or the command substitution is double-quoted), it is pointless to use a loop, since there will only ever be a single word in the for-loop list. The following will yield an identical result:
Quotes are unnecessary and the value of IFS is irrelevant since during parameter assignment field splitting and pathname expansion are bypassed (as is any operation that can yield additional fields/words).
This is what I need to do
I have a file that has a field with values like this
1111 2222
3333 4444
55555 666
333333333
444444444
I need for my command to out put only those fields that do not have spaces in them. So my output for the above file would be
333333333
444444444
how... (10 Replies)
Hello All,
This question is actually for the service console of VMware ESX 3.5 but is relevant to this forum I think. I have been advised to use the following commands:
for i in `find /vmfs/volumes/Test_VMFS/ -name "*.vmx"`
do
echo "$i"
#sed -i 's/scsi1:0.present =... (3 Replies)
Hi there,
I don't understand the following behavior:
toto:~$ for word in un "deux trois"; do echo $word; done
un
deux trois
toto:~$ sentence='un "deux trois"'
toto:~$ for word in $sentence; do echo $word; done
un
"deux
trois"
toto:~$ sentence="un 'deux trois'"
toto:~$ for word in... (10 Replies)
Dear All,
i facing problem to use string having spaces in for loop..
file used for FOR LOOP
command.txt
rpm -t -v ttm -D -r RJLL -h YELP
rpm -t -v ttm -D -r RJLL -h ERRT
rpm -t -v ttm -D -r RJLL -h TYYE
rpm -t -v ttm -D -r RJLL -h POOL
CODE using for execute above command... (3 Replies)
Is this possible?
I have a for loop in a shell script reading a list, but I want each line to be a loop, not each thing with a space.
Here is the example:
HOSTLIST="\
1.2.3.4 serverA
1.2.3.5 serverB"
for NBUHOST in `echo $HOSTLIST`
do
ssh ${SERVERNAME} "echo "${NBUHOST}"... (3 Replies)
Hi all,
I've been tangoing with this one for a couple of days now and I'm still not making any progress.
Basically I'm trying to match three numbers in a string from a text file with matching numbers in a jpeg, and then copying the results to another folder.
Data looks like this:
Model:... (4 Replies)
Hi
I'm trying to loop through an array that contains other arrays and these arrays consist of strings with spaces. The problem is that I can't seem to preserve the spacing in the string. The string with spaces are either divided into multiple items if I change IFS to \n or all the elements of... (4 Replies)
I'm sure this has been answered before, but my searches have not turned up the right solution. :confused:
I need to remove files in a directory, without descending into subdirectories, older than n days. Some of the filenames contain spaces or other special characters:
E10403 (2)
E20402 (2)... (15 Replies)
I have a folder with files and I have to process them in a loop. However the filenames have space characters, so the list get split.
$ touch "File Number_1"
$ touch "File Number_2"
$ ls "/tmp/File Number"_*
/tmp/File Number_1 /tmp/File Number_2
I tried following (sorry for using the... (3 Replies)
Hello,
I wrote a simple script, that basically wait for a *.dat-file in a certain folder, which is always a zipped file and extracts it.
It worked before and i changed nothing in the script, but since last week i have the problem, that it doesnt extract files containing a space. How do i make... (4 Replies)
Discussion started by: blend_in
4 Replies
LEARN ABOUT DEBIAN
anyevent::loop
AnyEvent::Loop(3pm) User Contributed Perl Documentation AnyEvent::Loop(3pm)NAME
AnyEvent::Loop - AnyEvent's Pure-Perl event loop
SYNOPSIS
use AnyEvent;
# use AnyEvent::Loop;
# this module gets loaded automatically when no other loop can be found
# Explicit use:
use AnyEvent::Loop;
use AnyEvent;
...
AnyEvent::Loop::run; # run the event loop
DESCRIPTION
This module provides an event loop for AnyEvent in case no other event loop could be found or loaded. You don't have to do anything to make
it work with AnyEvent except by possibly loading it before creating the first AnyEvent watcher.
This module is not some loop abstracion used by AnyEvent, but just another event loop like EV or Glib, just written in pure perl and
delivered with AnyEvent, so AnyEvent always works, even in the absence of any other backend.
If you want to use this module instead of autoloading a potentially better event loop you can simply load it (and no other event loops)
before creating the first watcher.
As for performance, this module is on par with (and usually faster than) most select/poll-based C event modules such as Event or Glib (it
does not even come close to EV, though), with respect to I/O watchers. Timers are handled less optimally, but for many common tasks, it is
still on par with event loops written in C.
This event loop has been optimised for the following use cases:
monotonic clock is available
This module will use the POSIX monotonic clock option (if it can be detected at runtime) or the POSIX "times" function (if the
resolution is at least 100Hz), in which case it will not suffer adversely from time jumps.
If no monotonic clock is available, this module will not attempt to correct for time jumps in any way.
The clock chosen will be reported if the environment variable $PERL_ANYEVENT_VERBOSE is set to 8 or higher.
any number of watchers on one fd
Supporting a large number of watchers per fd is purely a dirty benchmark optimisation not relevant in practise. The more common case of
having one watcher per fd/poll combo is special-cased, however, and therefore fast, too.
relatively few active fds per "select" call
This module expects that only a tiny amount of fds is active at any one time. This is relatively typical of larger servers (but not the
case where "select" traditionally is fast), at the expense of the "dense activity case" where most of the fds are active (which suits
"select").
The optimal implementation of the "dense" case is not much faster, though, so the module should behave very well in most cases, subject
to the bad scalability of "select" in the presence of a large number of inactive file descriptors.
lots of timer changes/iteration, or none at all
This module sorts the timer list using perl's "sort", even though a total ordering is not required for timers internally.
This sorting is expensive, but means sorting can be avoided unless the timer list has changed in a way that requires a new sort.
This means that adding lots of timers is very efficient, as well as not changing the timers. Advancing timers (e.g. recreating a
timeout watcher on activity) is also relatively efficient, for example, if you have a large number of timeout watchers that time out
after 10 seconds, then the timer list will be sorted only once every 10 seconds.
This should not have much of an impact unless you have hundreds or thousands of timers, though, or your timers have very small
timeouts.
FUNCTIONS
The only user-visible functions provided by this module loop related - watchers are created via the normal AnyEvent mechanisms.
AnyEvent::Loop::run
Run the event loop, usually the last thing done in the main program when you want to use the pure-perl backend.
AnyEvent::Loop::one_event
Blocks until at least one new event has been received by the operating system, whether or not it was AnyEvent-related.
SEE ALSO
AnyEvent.
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://anyevent.schmorp.de
perl v5.14.2 2012-04-08 AnyEvent::Loop(3pm)