dcat: concatenate file(s) to standard output
a cat command-line implemenation in dart, inspired by the write command-line apps sample code.
command-line usage
dcat --help
usage: dcat [option]... [file]...
concatenate file(s) to standard output.
with no file, or when file is -, read standard input.
-b, --number-nonblank number nonempty output lines, overrides -n
-e, --show-ends display $ at end of each line
-h, --help display this help and exit
-n, --number number all output lines
-t, --show-tabs display tab characters as ^i
-s, --squeeze-blank suppress repeated empty output lines
--version output version information and exit
examples:
dcat f - g output f's contents, then standard input, then g's contents.
dcat copy standard input to standard output.
compile application
*nix
dart compile exe -o bin/dcat bin/dcat.dart
windows
dart compile exe bin/dcat.dart
differences from gnu cat
- no binary file support.
- line numbers are printed as
x:wherexis the line number.
