r - Copy script after executing -


is there possibility copy executed lines or script working directory?

so normal scenario is, have stand alone script need sourced within working directory , need. after few month, made update these scripts , love have snapshot script when executed source...

so file.copy(itself, '.') or this.

i think you're looking for:

file.copy(sys.frame(1)$ofile,           = file.path(dirname(sys.frame(1)$ofile),                          paste0(sys.date(), ".r")))

this take current file , copy new file, in same directory , name of currentdate.r, example 2015-07-14.r

if want copy working directory instead of original script directory, use

file.copy(sys.frame(1)$ofile,           = file.path(getwd(),                          paste0(sys.date(), ".r")))

just note sys.frame(1)$ofile works if saved script sourced, trying run in terminal fail. worth mentioning though might not best practice. perhaps looking version control system better.

explanation:

tbh might not best person explain (i copied idea somewhere , use sometimes), i'll try. in order have information script file r needs running file inside environment information, , when environment source call contains ofile data. use (1) select next (source()'s) environment following global environment (which 0). when you're running terminal, there's no frame/environment other global (that's error message), since no file being ran - commands sent straight terminal.

to illustrate that, can simple test:

> sys.frame(1) error in sys.frame(1) : not many frames on stack

but if call function:

> myf <- function() sys.frame(1) > myf() <environment: 0x0000000013ad7638>

our function's environment doesn't have in it, exists but, in case, not have oflile:

> myf <- function() names(sys.frame(1)) > myf() character(0)

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