Stacks datasets together by column. For example:

tut stack [files ...]

df1.tsv

df2.tsv

tut stack df1.tsv df2.tsv

Stacked df1.tsv df2.tsv

You can also attach the basename of the file it came from to keep track of where data is coming from.

I frequently use this tool to combine datasets of separate samples for comparison.

Extracts a range (1-based) from every file

 slice range [files ...]

Where range is the range of lines to keep.

• :5 - From the beginning to the 5th line
• 5: - From the 5th line to the end
• 3:5 - From the 3rd to the 5th line

Select columns from a file by column position (1-based) or name.

# These are equivelent:
tut select 1,2 tests/data/df1.tsv
tut select mpg,cyl tests/data/df1.tsv

Add row numbers with --row-numbers

nim c --cpu:i386 --os:linux --compileOnly tut.nim