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Test Your Knowledge in Computers #55
Difficulty: Easy
The term UPS stands for 'Universal Power Source'.
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isatty(3f) [bsd man page]

TTYNAM(3F)																TTYNAM(3F)

NAME
ttynam, isatty - find name of a terminal port SYNOPSIS
character*(*) function ttynam (lunit) logical function isatty (lunit) DESCRIPTION
Ttynam returns a blank padded path name of the terminal device associated with logical unit lunit. Isatty returns .true. if lunit is associated with a terminal device, .false. otherwise. FILES
/dev/* /usr/lib/libU77.a DIAGNOSTICS
Ttynam returns an empty string (all blanks) if lunit is not associated with a terminal device in directory `/dev'. 4.2 Berkeley Distribution May 15, 1985 TTYNAM(3F)

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STAT(3F)																  STAT(3F)

NAME
stat, lstat, fstat - get file status SYNOPSIS
integer function stat (name, statb) character*(*) name integer statb(12) integer function lstat (name, statb) character*(*) name integer statb(12) integer function fstat (lunit, statb) integer statb(12) DESCRIPTION
These routines return detailed information about a file. Stat and lstat return information about file name; fstat returns information about the file associated with fortran logical unit lunit. The order and meaning of the information returned in array statb is as described for the structure stat under stat(2). The ``spare'' values are not included. The value of either function will be zero if successful; an error code otherwise. FILES
/usr/lib/libU77.a SEE ALSO
stat(2), access(3F), perror(3F), time(3F) BUGS
Pathnames can be no longer than MAXPATHLEN as defined in <sys/param.h>. 4.2 Berkeley Distribution May 15, 1985 STAT(3F)

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