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when someone mail you his ssh public key, and the lines are broken with '\n', you can reconstruct a new file with one key by line with this command.
I think I picked this one up from Hak5 (yeah I know.. kinda lame)
if you, like me, do not have the numsum, this way can do the same.
I must monitorize a couple of ftp servers every morning WITHOUT a port-scanner
Instead of ftp'ing on 100 ftp servers manually to test their status I use this loop.
It might be adaptable to other services, however it may require a 'logout' string instead of 'quit'.
The file ftps.txt contains the full list of ftp servers to monitorize.
Get Memeory Info
Col 1 is swapped sum in kb
Col 2 is pid of process
Col 3 is command that was issued
i wanted to delete all duplicate lines from .bash_history and keep the order of the other lines.
the command cat's the file and adds line numbers, then sorts by the second column. afterwards uniq omits repeated lines, but skips the first field (the line number). then it sorts by the line numbers and at the end cuts the numbers off.
cat - concatenate MP3 files and save it...
Searches all log files (including archived bzip2 files) for invalid user and PAM authentication errors, both of which are indicative of brute force attempts at logging into computer. A list of all unique IP addresses and domain names is appended to hosts.deny. The command (and grep error messages) will work on Mac OS X 10.6, small adjustments may be needed for other OSs.
This should work on any unix platform running bash. Just type the program into cat and give it a ^D when you're done, at which time it will compile, run, and remove the program. Obviously, you can run it without the "rm a.out" if you'd like to keep the binary. If you want to keep the source, well, you might as well just write it in vi or emacs first then.
If you're on a system that doesn't have nl, you can use cat -n.
Well its just appending your public key to the remote hosts authorized_keys, but can get messy logging in and out
Yep, is hard, but is a way more flexible using pipe.
i want to count how many regex code i have used in vim in a long time
so i make a directory in svn host and post record to this directory
of course i dont want to post manually so i worte a script to do that
and this is the core thing to do
Now put more interesting stuff on the script in replacement of hostname, even entire functions, etc, and stuff.
hosta> cat myScript.sh
[ $1 == "client" ] && hostname || cat $0 | ssh $1 /bin/sh -s client
hosta> myScript.sh hostb