Imagine if you could SSH somewhere by picking a hostname from a list.
Now you can:
warp is a script that reads a file (~/.warp) and displays it in VIM. When
you press enter, you SSH to the hostname under the cursor.
If you select multiple lines, it opens cluster SSH (csshX).
If you have a bunch of servers you can SSH to, think about how you manage that now:
- you TYPE the hostname, maybe relying on bash completion?
- you create a BUNCH of aliases, with varying level of sophistication, based on how many hostnames?
Picking from a list solves all that.
Create the file ~/.warp and put one hostname per line.
Like this:
example.com
www@example.com
# AMAZON
-- production useast
app10.useast1.ec2.example.com
app11.useast1.ec2.example.com
app12.useast1.ec2.example.com
-- production uswest
app10.uswest1.ec2.example.com
app11.uswest1.ec2.example.com -- deprecated
app12.uswest1.ec2.example.com
# LOCAL
tv
router
192.168.0.5 -- laptop
The simplest format is one hostname per line. When you press enter, only the
first column (awk '{print $1}') is taken as the hostname.
This also means, if you DON'T press enter on a line, it can be whatever you want: it can be blank or contain comments. This can greatly help with the visual organization of the file. I like to put headers, separators and notes all over the file.
What happens if you press enter on a line that's not a hostname? It will try to SSH there and it won't work ... don't do that :-)
If you visually select (shift-v) multiple lines, cluster SSH (csshX) will be
used to SSH to them.
Any VIM movement commands will work, this is regular VIM after all. I recommend searching with regular expressions, but using line numbers is good too.
VIM is started with the content of ~/.warp, but you can modify the buffer
before making a selection -- changes will NOT be saved back to ~/.warp. This
is useful if you want to SSH to multiple hosts that are not on lines following
each other: just slice and dice the file, put the lines together, add or modify
something, select them and press enter.
Put warp somewhere in your $PATH. This is simple but it won't be able to
modify your history: your bash history will say warp without indications of
where you warped to.
See below.
Add source PATH/TO/warp in your .bashrc. Now you can warp: reload your
shell, type warp, press enter. A function was added to your shell.
warp will modify the history to contain the SSH command (as if you typed it)
rather than warp.