ref: 15b2a406cc0e11377cee12b5a112c003f7250a7f
dir: /man/1/read/
.TH READ 1 .SH NAME read \- read from standard input with optional seek .SH SYNOPSIS .B read [ .BR - [ eor ] .I offset ] [ .I count ] .SH DESCRIPTION .I Read does a single read of .I count bytes (default: 8192 bytes) from the standard input and writes the result to the standard output. If the optional .I offset argument is given, .I read will first apply .IR sys-seek (2): .TP .BI -o " offset" seek .I offset bytes from the start of the file .TP .BI -e " offset" seek .I offset bytes from the end of the file .TP .BI -r " offset" seek .I offset bytes from the standard input's current file offset .PP In all cases the file offset changes to reflect the result of the seek, and the number of bytes read. .SH SOURCE .B /appl/cmd/read.b .SH DIAGNOSTICS .I Read prints a diagnostic and returns a non-empty exit status .L fail:error on an I/O error; it quietly returns status .L fail:eof if the read returns zero bytes (conventionally, end of file). .SH SEE ALSO .IR cat (1), .I getline in .IR sh-std (1), .IR stream (1), .IR sys-read (2)