05-20-2010
Maybe, as the file is so big, it will be better to achieve the problem through a C program....
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Hi all!
I am relatively new to UNIX staff, and I have come across a problem:
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2. Shell Programming and Scripting
$mystring = "name:blk:house::";
print "$mystring\n";
@s_format = split(/:/, $mystring);
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print "\n";
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I have gone through all the threads in the forum and tested out different things. I am trying to split a 3GB file into multiple files. Some files are even larger than this.
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Hi,
I have some output in the form of:
#output:
abc123
def567
hij890
ghi324
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Hello,
if i have file like this:
010000890306932455804 05306977653873 0520080417010520ISMS SMT ZZZZZZZZZZZZZOC30693599000 30971360000 ZZZZZZZZZZZZZZZZZZZZ202011302942311 010000890306946317387 05306977313623 0520080417010520ISMS SMT ZZZZZZZZZZZZZOC306942190000 30971360000... (5 Replies)
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Hi... I have a question regarding the split function in PERL.
I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time.
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Hi... I have a question regarding the split function in PERL.
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my @d =split('\|', $_);
west|ACH|3|Y|LuV|N||N||
Qt|UWST|57|Y|LSV|Y|Bng|N|KT|
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Hello;
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LEARN ABOUT DEBIAN
queue-repair
queue-repair(8) System Manager's Manual queue-repair(8)
NAME
queue-repair - deal with the qmail queue directory structure
SYNOPSIS
queue-repair [ -htrcbn ] [ -n split ] [ conf-qmail ]
DESCRIPTION
queue-repair deals with the qmail queue structure; it can create a new queue, move and properly rename a queue, dynamically change the
conf-split value, convert big-todo queues to non-big-todo and vice versa, and repair a corrupted queue.
conf-qmail defaults to /var/lib/qmail/ on Debian.
OPTIONS
-h|--help
Display usage information and built-in defaults, then exit.
-t|--test
Run in test-only mode. queue-repair will attempt to report all problems that it finds, without correcting them. This is the
default.
-r|--repair
Run in repair mode. queue-repair will attempt to correct all problems that it finds, except if the basic queue directories (queue,
queue/mess, queue/info, etc) are not found.
-c|--create
Run in create-and-repair mode. queue-repair will attempt to correct all problems that it finds, including creation of a new queue
structure from scratch.
-s|--split split
Specify split as the value of conf-split. This is the number of split subdirectories for those queue directories which are hashed.
The default for qmail is 23. Appropriate values depend on the volume of mail handled, OS filesystem efficiency, and other factors,
but this should always be a prime number.
If you do not specify conf-split, queue-repair will attempt to determine the current value from the existing queue. This option can
be used, however, to change the conf-split value of an existing queue (qmail will still have to be recompiled with the new value).
When creating a new queue, this option must always be specified.
-b|--bigtoto
Use big-todo. queue-repair should be able to automatically determine if you're using qmail patched with the big-todo patch. This
option can be used, however, to convert a non-big-todo queue to a big-todo queue (qmail will still have to be recompiled with the
big-todo patch).
If neither this option nor --no-bigtodo is used, queue-repair will attempt to determine this automatically. When creating a new
queue, either this option or --no-bigtodo must always be specified.
-n|--no-bigtodo
Do not use big-todo. queue-repair should be able to automatically determine if you're using qmail patched with the big-todo patch.
This option can be used, however, to convert a big-todo queue to a non big-todo queue (qmail will still have to be recompiled with-
out the big-todo patch).
If neither this option nor --bigtodo is used, queue-repair will attempt to determine this automatically. When creating a new queue,
either this option or --bigtodo must always be specified.
--i-want-a-broken-conf-split
Force the use of a non-prime value for conf-split.
SEE ALSO
qmail(7)
queue-repair(8)