Copy first line of stdin to stdout, then execute a command. Useful to transform table data with a tool that does not understand header line.
$ cat data.tsv
index value
1 1.23
2 4.56
3 7.89
4 0.12
$ passhead awk '{ sum += $2; print $1, sum }' < data.tsv
index value
1 1.23
2 5.79
3 13.68
4 13.8Clone the repository and build passhead with make:
git clone https://github.com/snsinfu/passhead
cd passhead
makeMIT License