This help topic is for R version 2.9.0. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/tools/html/md5sum.html
md5sum {tools}R Documentation

Compute MD5 Checksums

Description

Compute the 32-byte MD5 checksums of one or more files.

Usage

md5sum(files)

Arguments

files

character. The paths of file(s) to be check-summed.

Value

A character vector of the same length as files, with names equal to files. The elements will be NA for non-existent or unreadable files, otherwise a 32-character string of hexadecimal digits.

On Windows all files are read in binary mode (as the md5sum utilities there do): on other OSes the files are read in the default way.

See Also

checkMD5sums

Examples

md5sum(dir(R.home(), pattern="^COPY", full.names=TRUE))

[Package tools version 2.9.0 ]