ref: 43de7b8419fa3582af6df803473ef1bde2ce5c23
dir: /man/1/ftest/
.TH FTEST 1 .SH NAME ftest, newer \- test file attributes .SH SYNOPSIS .B ftest .I test .I arg .PP .B newer .I file1 .I file2 .SH DESCRIPTION .I Ftest checks the specified attribute of .I arg according to .I test and yields an exit status signifying the result. For all .IR test s apart from .BR -t , .I arg is the name of the file to be tested; for .BR -t , it is the number of a file descriptor. Available tests are: .TP .B -d True if the file exists and is a directory. .TP .B -e True if the file exists. .TP .B -f True if the file exists and is a regular file. .TP .B -r True if the file exists and is readable. .TP .B -s True if the file exists and has non-zero size. .TP .B -t True if the open file represented by the number .I arg represents the same file as .BR /dev/cons . .TP .B -w True if the file exists and is writable. .TP .B -x True if the file exists and is executable. .LP .I Newer checks whether .I file1 exists and is no older than .IR file2 , which must also exist; if so, it yields a true exit status. Otherwise, it yields an error status. Neither file may be a directory. .SH SOURCE .B /appl/cmd/ftest.b .br .B /appl/cmd/newer.b .SH SEE ALSO .IR sys-stat (2) .SH BUGS These commands work only with .IR sh (1) as none of the other Inferno shells can check the exit status of a command. .PP Checking for read, write and execute capabilities is speculative - the file server has the last say. Group permissions are ignored.