How to run a command in your shell until it succeed
Mayeu Aug 11
I am regularly copying big files over the internet via
rsync, and since I am travelling a lot, I don't generally have access to stable internet connection, so I end-up rerunning the command multiple times until it succeeds.
Turns out there is a better way. Of course you could use
while and test the return of the command, but that sounds like a lot of work for a ad hoc command. But I am lazy and I recently discovered that an
until command exists!
Pretty straightforward to use:
$ until <put your command here>; do echo "Retrying at `date -Iminutes`"; done
rsync you get:
$ until rsync -aP src:/path/to/src dest/; do echo "Retrying at `date -Iminutes`"; done
And if you are really lazy, just create an alias (left as an exercise ;) ).
This post was originally published on mayeu.me.