rowsToCols in.txt out.txt
This tool is part of UCSC Genome Browser's utilities.
By default all columns are space-separated, and all rows must have the
same number of columns.
-varCol - rows may to have various numbers of columns.
-tab - fields are separated by tab
-fs=X - fields are separated by given character
-fixed - fields are of fixed width with space padding
-offsets=X,Y,Z - fields are of fixed width at given offsets
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