So unless you know and use [git annex](https://git-annex.branchable.com/), this is not going to be very useful for you. Check it out, though. It's pretty cool. Unless you are on Windows. In that case it's hell. Anyway, I wrote a script to help me figure out the output of [git annex unused](http://manpages.ubuntu.com/manpages/wily/man1/git-annex-unused.1.html). In short, it tells you what those files used to be called before you lost them. Script:
```python
#!/usr/local/bin/python3.5
import re, sys, os
from subprocess import Popen,PIPE
FNULL = open(os.devnull, 'w')
def seeker(s):
process = Popen(["git", "log", "--stat", "-S", s], stderr=FNULL, stdout=PIPE)
log = process.stdout.read().decode("utf-8")
match = re.search(r"(([ -~]*\/)*[ -~]*)\|", log)
if not match: return ''
else: return match.group(1).strip()
if len(sys.argv)>1:
print( seeker(sys.argv[1]) )
else:
clist = []
while True:
crawl = input().strip()
if not crawl: break
crawl = crawl.split()
clist.append(crawl)
for x in clist:
print('%s : %s' % ( x[0], seeker(x[1]) ) )
```
You can either call it with one argument which should be a key, or if you call it with no argument, it expects you to paste the list of results you got from ```git annex unused``` into stdin. It then goes through the list and tells you the corresponding filename for each key.
This script is phenomenally stupid in that it does quite a terrible regular expression search on the output of git log and returns the first match it finds. Sue me, it works pretty well at my end.