...: $ number Parameters: sp[0] holds the field number Returns the field's content in sp[0]. fflush Flush the output file or pipe associated with an expression . Usage: fflush( exp…...2008] fchownat() [Added in POSIX.1-2008] fclose() fcntl() (for any value of cmd argument) fflush() fgetc() fgetpos() fgets() fgetwc() fgetws() fmtmsg() fopen() fpathconf() fprin…