The positional parameters are in $1 $2 $3 etc but if you are invoking the script with redirection, there is no positional parameter, and no file name, just standard input.
Last edited by era; 05-13-2008 at 09:02 AM..
Reason: Add enlightening (?) example
I have been googling on the 'split' unix command to see if it can split a large file into 'n' number of files. Can anyone spare an example or a code snippet?
Thanks,
- CB (2 Replies)
Dear All,
I would like to split a file of the following format into multiple files based on the number in the 6th column (numbers 1, 2, 3...):
ATOM 1 N GLY A 1 -3.198 27.537 -5.958 1.00 0.00 N
ATOM 2 CA GLY A 1 -2.199 28.399 -6.617 1.00 0.00 ... (3 Replies)
I am getting a few gzip files into a folder by doing ftp to another server. Once I get them I move them to another location .But before that I need to make sure each gzip is not more than 5000 lines and split it up . The files I get are anywhere from 500 lines to 10000 lines in them and is in gzip... (4 Replies)
Hi,
I am new to unix. we have a requirement here to split a single file into multiples files based on the number of people available for processing. So i tried my hand at writing some code as below.
#!/bin/bash
var1=`wc -l $filename`
var2=$var1/$splitno
split -l $var2 $1
Please help me... (6 Replies)
hi, i really need it ...it's not simple to explain but as it's part of a crontab i can't split the file manually...and the file can change every day so the lines are not a good base.
example: how to split 1 csv file in 15 files?
thank you very much
regards :b: (4 Replies)
Hello Friends,
Can anyone help me for the below requirement.
I am having a file called Input.txt.
My requirement is first check the count that is wc -l input.txt
If the result of the wc -l Input.txt is less than 10 then don't split the Input.txt file. Where as if Input.txt >= 10 the split... (12 Replies)
Hello,
I've searched this forum and others for a solution to my problem but nothing seems just right, I'm hoping I can get some help (seems like this should be easy, and I apologize if I've missed something on the forum):
I have several large .fastq DNA sequence files (~20million reads,... (2 Replies)
We have a folder XYZ with large number of files (>350,000). how can i split the folder and create say 10 of them XYZ1 to XYZ10 with 35,000 files each. (doesnt matter which files go where). (12 Replies)
Hello All,
May i please know how do i ensure my split command would NOT generate incomplete output files like below, the last lines in each file is missing some columns or last line is complete.
split -b 50GB File File_
File_aa
|551|70210203|xxxxxxx|12/22/2010 20:44:58|11/01/2010... (1 Reply)
i use the split command to split a one terabyte backup file into 10 chunks of 100 GB each. The files are split one after the other. While the files is being split, I will like to scp the files one after the other as soon as the previous one completes, from server A to Server B. Then on server B ,... (2 Replies)
Discussion started by: malaika
2 Replies
LEARN ABOUT REDHAT
yapp
YAPP(1) User Contributed Perl Documentation YAPP(1)NAME
yapp - A perl frontend to the Parse::Yapp module
SYNOPSYS
yapp [options] grammar[.yp]
yapp -V
yapp -h
DESCRIPTION
yapp is a frontend to the Parse::Yapp module, which lets you compile Parse::Yapp grammar input files into Perl LALR(1) OO parser modules.
OPTIONS
Options, as of today, are all optionals :-)
-v Creates a file grammar.output describing your parser. It will show you a summary of conflicts, rules, the DFA (Deterministic Finite Au-
tomaton) states and overall usage of the parser.
-s Create a standalone module in which the driver is included. Note that if you have more than one parser module called from a program,
to have it standalone, you need this option only for one of your parser module.
-n Disable source file line numbering embedded in your parser module. I don't know why one should need it, but it's there.
-m module
Gives your parser module the package name (or name space or module name or class name or whatever-you-call-it) of module. It defaults
to grammar
-o outfile
The compiled output file will be named outfile for your parser module. It defaults to grammar.pm or, if you specified the option -m
A::Module::Name (see below), to Name.pm.
-t filename
The -t filename option allows you to specify a file which should be used as template for generating the parser output. The default is
to use the internal template defined in Parse::Yapp::Output.pm. For how to write your own template and which substitutions are avail-
able, have a look to the module Parse::Yapp::Output.pm : it should be obvious.
-b shebang
If you work on systems that understand so called shebangs, and your generated parser is directly an executable script, you can specifie
one with the -b option, ie:
yapp -b '/usr/local/bin/perl -w' -o myscript.pl myscript.yp
This will output a file called myscript.pl whose very first line is:
#!/usr/local/bin/perl -w
The argument is mandatory, but if you specify an empty string, the value of $Config{perlpath} will be used instead.
grammar
The input grammar file. If no suffix is given, and the file does not exists, an attempt to open the file with a suffix of .yp is tried
before exiting.
-V Display current version of Parse::Yapp and gracefully exits.
-h Display the usage screen.
BUGS
None known now :-)
AUTHOR
Francois Desarmenien <francois@fdesar.net>
COPYRIGHT
(c) Copyright 1998-1999 Francois Desarmenien, all rights reserved. See Parse::Yapp(3) for legal use and distribution rights
SEE ALSO Parse::Yapp(3)Perl(1)yacc(1)bison(1)perl v5.8.0 2001-02-11 YAPP(1)