08-17-2006
removing certain tabs
I have a tab delimited file with many lines, one for each record.
each line is tab delimited with a tab before the first data field, a tab between each data field, and a tab after the last data field before it moves onto the next line.
I need to remove only the preceeding tab before the first data field and the tab after the last data field.
I'm sure this can be done with sed, but I don't really know the command that well.
Can anyone help?
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LEARN ABOUT DEBIAN
vcf-isec
VCF-ISEC(1) User Commands VCF-ISEC(1)
NAME
vcf-isec - create intersections, unions, complements on bgzipped and tabix indexed VCF or tab-delimited files
SYNOPSIS
vcf-isec [OPTIONS] file1.vcf file2.vcf ...
DESCRIPTION
About: Create intersections, unions, complements on bgzipped and tabix indexed VCF or tab-delimited files.
Note that lines from all files can be intermixed together on the output, which can yield unexpected results.
OPTIONS
-C, --chromosomes <list|file>
Process the given chromosomes (comma-separated list or one chromosome per line in a file).
-c, --complement
Output positions present in the first file but missing from the other files.
-d, --debug
Debugging information
-f, --force
Continue even if the script complains about differing columns.
-o, --one-file-only
Print only entries from the left-most file. Without -o, all unique positions will be printed.
-n, --nfiles [+-=]<int>
Output positions present in this many (=), this many or more (+), or this many or fewer (-) files.
-p, --prefix <path>
If present, multiple files will be created with all possible isec combinations. (Suitable for Venn Diagram analysis.)
-t, --tab <chr:pos:file>
Tab-delimited file with indexes of chromosome and position columns. (1-based indexes)
-w, --win <int>
In repetitive sequences, the same indel can be called at different positions. Consider records this far apart as matching (be it a
SNP or an indel).
-h, -?, --help
This help message.
EXAMPLES
bgzip file.vcf; tabix -p vcf file.vcf.gz bgzip file.tab; tabix -s 1 -b 2 -e 2 file.tab.gz
vcf-isec 0.1.5 July 2011 VCF-ISEC(1)