Finding the date/time a file was first added to a Git repository
Is there a simple Git command to determine the "creation date" of a file in a repository, i.e. the date it was first added?
It would be best if it can determine this even through 开发者_如何学Gofile renames/moves. I'd like it to be a computer-readable one-line output; it may be that I haven't figured out the correct git log <fname>
options to do this.
git log --follow --format=%ad --date default <FILE> | tail -1
With this command you can out all date about this file and extract the last
The option %ad
shows the date in the format specified by the --date setting, one of relative
, local
, iso
, iso-strict
, rfc
, short
, raw
, human
, unix
, format:<strftime-string>
, default
.
The native solution:
git log --diff-filter=A --follow --format=%aD -1 -- <fname>
It gives the last "creation date" of a file in a repository, and does it regardless of file renames/moves.
-1
is synonym to --max-count=1
and it limits the number of commits to output (to be not more than one in our case).
This limit is needed since a file can be added more than once. For example, it can be added, then removed, then added again. In such case --diff-filter=A
will produce several lines for this file.
To get the first creation date in the first line we should use --reverse
option without limitation (since limit is applied before ordering).
git log --diff-filter=A --follow --format=%aI --reverse -- <fname> | head -1
%aI
gives author date in the strict ISO 8601 format (e.g. 2009-06-03T07:08:51-07:00
).
But this command doesn't work properly due to the known bug in Git (see "--follow is ignored when used with --reverse" conversation in git maillist). So, we are forced to use some work around for awhile to get the first creation date. E.g.:
git log --diff-filter=A --follow --format=%aI -- <fname> | tail -1
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