Mlr --help

Usage: mlr [flags] {verb} [verb-dependent options ...] {zero or more file names} 

If zero file names are provided, standard input is read, e.g.
  mlr --csv sort -f shape example.csv  

Output of one verb may be chained as input to another using "then", e.g.
  mlr --csv stats1 -a min,mean,max -f quantity then sort -f color example.csv

Please see 'mlr help topics' for more information.
Please also see https://miller.readthedocs.io

See also

• Miller, mlr