/usr/bin/makedb

Usage: makedb [OPTION...] INPUT-FILE OUTPUT-FILE
  or:  makedb [OPTION...] -o OUTPUT-FILE INPUT-FILE
  or:  makedb [OPTION...] -u INPUT-FILE
Create simple database from textual input.

  -f, --fold-case            Convert key to lower case
  -g, --generated=CHAR       Generated line not part of iteration
  -o, --output=NAME          Write output to file NAME
  -q, --quiet                Do not print messages while building database
  -u, --undo                 Print content of database file, one entry a line
  -?, --help                 Give this help list
      --usage                Give a short usage message
  -V, --version              Print program version

Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.

For bug reporting instructions, please see:
<https://www.gnu.org/software/libc/bugs.html>.