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Full Discussion: Substr
Top Forums UNIX for Dummies Questions & Answers Substr Post 302950464 by mjf on Friday 24th of July 2015 08:05:37 PM
Old 07-24-2015
Xterr,
Couple of things:

1. Not sure what your original code was before you edited it as your updated code is identical.
2. There is a space in the first position of each line on your input file so the condition ^> will not find any lines.
3. What is the requirement as to why you need to use substr as your solution appears to work with a slight modification?
4. Based on your input and output files, length>=7 should be length>7 in your solution after removing the spaces in first position of each line.

Code:
awk '/^>/{id=$0;next}length>7 { print id, "\n"$0}' Test.txt
>GHL8OVD01BNNCA Freq 10
TAGATGTGCCCGTGGGTTTCCCGTCAACACCGGATAGTNGCAGCAYaaaMz12
>GHL8OVD01CMQVT Freq 1
TTGATGTGCCAGTTTCCCGTCTAGCAGCACTACCAGGACCTTCGCNTA
>GHL8OVD01CMQVW Freq 1
TTGATGTGTCCCGTCGACACCGGCAAATAGCAGCAGCA-TACCAG-AC
>GHL8OVD01A45V3 Freq 1
TTGATTCCCGTCGACACCGGCAAATAGCAGCAGCACTA-AGGACCYTC
>GHL8OVD01AV2U9 Freq 1
TTGATGTGCCAGCTTTCGCGTCGACACCGGCAAATAGTCGCAGCGTTA
>GHL8OVD01CMQVT Freq 1
TTGATGTGCCAGTTTCCCGTCTAGCAGCACTACCAGGACCTTCGCTTA
>GHL8OVD01CMQVW Freq 1
TTGATGTGTCCCGTCGACACCGGCAAATAGCAGCAGCA-TACCAGTAC
>GHL8OVD01A45V3 Freq 1
TTGATTCCCGTCGACACCGGCAAATAGCAGCAGCACTA-AGGACCTTC
>GHL8OVD01AV2U9 Freq 1
TTGATGTGCCAGCTTTCGCGTCGACACCGGCAAATAGTCGCAGCGTTA

 

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PR(1)							      General Commands Manual							     PR(1)

NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)
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