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Top Forums Shell Programming and Scripting Printing the lines that appear in an other file, and the three lines after them Post 302645373 by jbi on Wednesday 23rd of May 2012 09:41:18 AM
Old 05-23-2012
The first lines of my input are :
Code:
@SRR407306.1 GA2MACHINE1_1004:1:1:1139:9772 length=74      <-header
TCCCTAGCTTCTCTGGTGAGNTATNANNCAAGGTCCCTAANNNNNNNNNNTTAACACATGAANNNNNNNNNGTC
+SRR407306.1
EGGGDGGGDGGGGFGFEGDC#AAA#A##AB?B??GGGED=##########ACC@EEEEE>?#############
@SRR407306.2 GA2MACHINE1_1004:1:1:1139:5426 length=74      <-header
AATCTTGGCTCACTGCAACCNCCGNCNNCCTGGTTCAAGCNNNNNNNNNNCCTCAGCCTCCCNNNNNNNNNAGA
+SRR407306.2
F=FDEFEF:FFFFDFFB?B<#=>A#;##?=A@>7A?DDA6##########2A>=??ACCCB@############
@SRR407306.3 GA2MACHINE1_1004:1:1:1139:20595 length=74    <-header
TAGGAAGGCAGCTATGATGGNTCANGNNCAGGAAGGTGGGNNNNNNNNNNCAGCCTCCCTGANNNNNNNNNTCG

The file contains approximately 200 million lines.
I would also be glad if you could give me a bit of explanation on your code, so I can adapt it by myself if I need it.
Thanks
 

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lptest(1B)					     SunOS/BSD Compatibility Package Commands						lptest(1B)

NAME
lptest - generate line printer ripple pattern SYNOPSIS
/usr/ucb/lptest [ length [count]] DESCRIPTION
The lptest utility writes the traditional ripple test pattern to the standard output. In 96 lines, the ripple test pattern prints all 96 printable ASCII characters in each position. The ripple test pattern was originally created to test printers. It is also useful for test- ing terminals, driving terminal ports, debugging, and performing tasks that require a quick supply of random data. This command is obsolete. OPTIONS
length Specifies the length of the output line in characters. 79 characters is the default. count Specifies the number of output lines. 200 lines is the default. If count is specified, length must also be specified. EXIT STATUS
The following exit values are returned: 0 Successful completion. non-zero An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscplp | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.10 9 Sep 1996 lptest(1B)
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