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untar undo

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

show where symlinks are pointing
displays the output of ls -l without the rest of the crud. pretty simple but useful.

Open Port Check
also could specify port number: lsof -ni TCP:80

how to export a table in .csv file
Exports the result of query in a csv file

MySQL: Slice out a specific table from the output of mysqldump
Only filters the statement related to a specific table ('departments', in the example), from the output of mysqldump

Doing some floating point calculations with rounding (e.g. at the 3rd decimal)

New command with the last argument of the previous command.

Create a single-use TCP proxy with debug output to stderr
or you can add "-x" to get a typical hexdump like output

Change host name
With sed you can replace strings on the fly.


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