Check output device is a terminal: Difference between revisions

=={{header|zkl}}==

On Unix, check to see if stdout's st_mode is a character device.

<lang zkl>const S_IFCHR=0x2000;

fcn S_ISCHR(f){ f.info()[4].bitAnd(S_IFCHR).toBool() }

S_ISCHR(File.stdout).println();</lang>

{{out}}

<pre>

$ zkl bbb # from the command line

True

$ zkl bbb | more

False

$ zkl bbb > foo.txt

$ cat foo.txt

False

</pre>