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This may be listed already but this command is useful to untar a specific directory to a different server.
Some servers don't have ssh-copy-id, this works in those cases.
It will ask for the destination server, this can be IP, hostname, or user@hostname if different from current user.
Ssh keygen will let you know if a pubkey already exists on your system and you can opt to not overwrite it.
Interfaces like lo can be omitted from the beginning, there are probably better ways of doing this, i'm a noob at awk.
Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc.
Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this.
Make sure your server's date is correct, otherwise insert your own serial number.
should usually follow this command.
Bash scrip to test if a server is up, you can use this before wget'ing a file to make sure a blank one isn't downloaded.