apt-utils contains the /usr/bin/apt-extracttemplates program which is used when packages need to ask you questions about how to be configured. This package being Priority: important, means it should really be installed except in rare circumstances. If there is configuration pending, dpkg-reconfigure [package] will perform it. If you missed configuring a number of packages and don’t … Read more
I have had very good results using tar, pigz (parallel gzip) and nc. Source machine: tar -cf – -C /path/of/small/files . | pigz | nc -l 9876 Destination machine: To extract: nc source_machine_ip 9876 | pigz -d | tar -xf – -C /put/stuff/here To keep archive: nc source_machine_ip 9876 > smallstuff.tar.gz If you want to … Read more
Identify configured swap devices and files with cat /proc/swaps. Turn off all swap devices and files with swapoff -a. Remove any matching reference found in /etc/fstab. Optional: Destroy any swap devices or files found in step 1 to prevent their reuse. Due to your concerns about leaking sensitive information, you may wish to consider performing … Read more
$ ethtool <eth?> For example: $ ethtool eth0 provides: Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal … Read more
With Unix you can pipe the output of one program into another. So to filter tail, you can use grep: tail -f path | grep your-search-filter
As noted in https://github.com/wp-cli/wp-cli/issues/1754#issuecomment-91361340, I figured this one out. It turns out it wasn’t wp-cli’s fault at all. My confusion arose from the fact that I’m running a web server with nginx and php fpm, which has it’s own php.ini . wp commands run php (cli) directly on the host and so the config can … Read more
You can use iptables to rate-limit new incoming connections to the SSH port. I’d have to see your entire iptables configuration in order to give you a turnkey solution, but you’re basically talking about adding rules like: iptables -A INPUT -p tcp –dport 22 -m recent –update –seconds 60 –hitcount 5 –name SSH –rsource -j … Read more
You could always do this: ssh user@host ls -l /some/directory That will SSH to the host, run ls, dump the output back to you and immediately disconnect.
IMHO the most reliable/best answer is partprobe /dev/sdX
An asterisk in the minute (first) field tells it to run every minute, regardless of the other fields. You need to specify an exact minute to run within the hour. Be that on the hour (0), half past (30), etc.. 0 */2 * * * /path-to-script