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Top Forums Shell Programming and Scripting How to remove empty field in a text file? Post 302931567 by RavinderSingh13 on Tuesday 13th of January 2015 11:38:44 PM
Old 01-14-2015
Hello huiyee1,

Could you please try following, it may help you.
Code:
awk '{$1=$1} 1' OFS="\t" Input_file

Output will be as follows.
Code:
LG10_PM_map_19_LEnd     1000560 G       AG      AG
LG10_PM_map_19_LEnd     1005621 G       AG
LG10_PM_map_19_LEnd     1011214 A       AG      AG
LG10_PM_map_19_LEnd     1011673 T       CT      CT
LG10_PM_map_19_LEnd     1088961 C       CT
LG10_PM_map_19_LEnd     1089024 G       AG
LG10_PM_map_19_LEnd     1108301 C
LG10_PM_map_19_LEnd     11365128        G       AG      AG      AG      AG      AG
LG10_PM_map_19_LEnd     11365170        T       CT      CT      CT      CT      CT
LG10_PM_map_19_LEnd     11381744        A       AG      AG      AG      AG
LG10_PM_map_19_LEnd     11381772        T       CT      CT      CT
LG10_PM_map_19_LEnd     11385851        A       AG      AG      AG
LG10_PM_map_19_LEnd     11386265        A       AC      AC      AC
LG10_PM_map_19_LEnd     1138663 T       AT

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
 

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fmt(1)								   User Commands							    fmt(1)

NAME
fmt - simple text formatters SYNOPSIS
fmt [-cs] [-w width | -width] [inputfile]... DESCRIPTION
fmt is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the -w width option. The default width is 72. fmt concatenates the inputfiles listed as arguments. If none are given, fmt formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. fmt does not fill nor split lines beginning with a `.' (dot), for compatibility with nroff(1). Nor does it fill or split a set of contiguous non-blank lines which is determined to be a mail header, the first line of which must begin with "From". Indentation is preserved in the output, and input lines with differing indentation are not joined (unless -c is used). fmt can also be used as an in-line text filter for vi(1). The vi command: !}fmt reformats the text between the cursor location and the end of the paragraph. OPTIONS
-c Crown margin mode. Preserve the indentation of the first two lines within a paragraph, and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. -s Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such for- matted text, from being unduly combined. -w width | -width Fill output lines to up to width columns. OPERANDS
inputfile Input file. ENVIRONMENT VARIABLES
See environ(5) for a description of the LC_CTYPE environment variable that affects the execution of fmt. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
nroff(1), vi(1), attributes(5), environ(5) NOTES
The -width option is acceptable for BSD compatibility, but it may go away in future releases. SunOS 5.11 9 May 1997 fmt(1)
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