cut

cut --help
cut: illegal option -- -
usage: cut -b list [-n] [file ...]
       cut -c list [file ...]
       cut -f list [-s] [-w | -d delim] [file ...]

Tabulator as separator:

cut -f1 -d$'\t'

See also

• awk, awk -F, cut, $NF
• cut, cut -d, tr, awk -F