?? sum.1
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.TH SUM 1 .SH NAMEsum \- sum and count blocks in a file.SH SYNOPSIS.B sumfile.SH DESCRIPTION.I Sumcalculates and prints a 16-bit checksum for the named file,and also prints the number of blocks in the file.It is typically used to look for bad spots, orto validate a file communicated oversome transmission line..SH "SEE ALSO"wc(1).SH DIAGNOSTICS`Read error'is indistinuishable from end of file onmost devices; check the block count.?? 快捷鍵說明
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