R: Gets the checksum of a file

getChecksum.GenericDataFile {R.filesets} | R Documentation

## Gets the checksum of a file

### Description

Gets the checksum of a file.

### Usage

    ## S3 method for class 'GenericDataFile'
    getChecksum(this, write=NA, force=FALSE, verbose=FALSE, ...)

### Arguments

`write` | If `TRUE` or `NA` and a checksum file does not exists, then a checksum file is created, iff possible. If `NA` and the file could not be created, then it falls back to `FALSE`, but if `TRUE` an error is thrown. If `FALSE` and no checksum file exists, the checksum is calculated on the fly.
`force` | If `FALSE`, the file exists and has not be modified since, then the cached checksum is returned.
`verbose` | ...
`...` | Not used.

### Value

Returns a `character` string, which can be `NA` if file is missing.

### Author(s)

Henrik Bengtsson

### See Also

Internally `digest` is used. `*readChecksum()`. `*writeChecksum()`. `*compareChecksum()`. For more information see `GenericDataFile`.

[Package R.filesets version 2.11.0 Index]