Cowsay generates an ASCII picture of a cow saying something provided by the user. If run with no
arguments, it accepts standard input, word-wraps the message given at about 40 columns, and prints the
cow saying the given message on standard output.
To aid in the use of arbitrary messages with arbitrary whitespace, use the -n option. If it is
specified, the given message will not be word-wrapped. This is possibly useful if you want to make the
cow think or speak in figlet(6). If -n is specified, there must not be any command-line arguments left
after all the switches have been processed.
The -W specifies roughly where the message should be wrapped. The default is equivalent to -W40 i.e.
wrap words at or before the 40th column.
If any command-line arguments are left over after all switches have been processed, they become the cow's
message. The program will not accept standard input for a message in this case.
There are several provided modes which change the appearance of the cow depending on its particular
emotional/physical state. The -b option initiates Borg mode; -d causes the cow to appear dead; -g
invokes greedy mode; -p causes a state of paranoia to come over the cow; -s makes the cow appear
thoroughly stoned; -t yields a tired cow; -w is somewhat the opposite of -t, and initiates wired mode; -y
brings on the cow's youthful appearance.
The user may specify the -e option to select the appearance of the cow's eyes, in which case the first
two characters of the argument string eye_string will be used. The default eyes are 'oo'. The tongue is
similarly configurable through -T and tongue_string; it must be two characters and does not appear by
default. However, it does appear in the 'dead' and 'stoned' modes. Any configuration done by -e and -T
will be lost if one of the provided modes is used.
The -f option specifies a particular cow picture file (``cowfile'') to use. If the cowfile spec contains
'/' then it will be interpreted as a path relative to the current directory. Otherwise, cowsay will
search the path specified in the COWPATH environment variable. To list all cowfiles on the current
COWPATH, invoke cowsay with the -l switch.
If the program is invoked as cowthink then the cow will think its message instead of saying it.