Human readable timestamp for filenames
I use this bash alias (should work in Linux, Cygwin, probably MacOS, maybe other Unixes):
alias timestamp="date --rfc-3339=ns | tr ' ' '_'"
Then use it like this for example to archive a file:
mv somefile somefile_$(timestamp)
You should see something like
`somefile' -> `somefile_2014-11-13_11:45:46.980175800-04:00'
If you don’t like colons in file names, change
tr ' ' to
tr ' :'.