If you have a Scaleway VPS with IPv6 enabled, you may have noticed that after a reboot the public (global) IPv6 address is not present. So after each reboot you may need to run this bash script to re-enabled the public IPv6 address (inet6 2001:*): #!/bin/bash # Load all IPv6 setting from the metadata service […]

First make sure your Debian server has enabled IPv6. Then type this command in your server: ping6 -c 4 ipv6.google.comping6 -c 4 ipv6.google.com

To get the public IPv6 address on a Debian server, type: /sbin/ip -6 addr | grep inet6/sbin/ip -6 addr | grep inet6 You should get something like this: inet6 ::1/128 scope host inet6 2001:123:456:55f::1/64 scope global inet6 fe80::62eb:69ff:fed2:d2a6/64 scope linkinet6 ::1/128 scope host inet6 2001:123:456:55f::1/64 scope global inet6 fe80::62eb:69ff:fed2:d2a6/64 scope link The line that contains […]

Delete symolic link (symlink) to a file or directory: unlink linknameunlink linkname Or you can also use rm: rm linknamerm linkname

This will recursively traverse the /path/to/folder and list only symbolic links: ls -lR /path/to/folder | grep ^lls -lR /path/to/folder | grep ^l If your intention is to follow the symbolic links too, use find: find -L /path/to/folder -xtype lfind -L /path/to/folder -xtype l

Content of /etc/init.d/redis-server on Debian 9.5 Stretch: #! /bin/sh ### BEGIN INIT INFO # Provides: redis-server # Required-Start: $syslog $remote_fs # Required-Stop: $syslog $remote_fs # Should-Start: $local_fs # Should-Stop: $local_fs # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: redis-server – Persistent key-value db # Description: redis-server – Persistent key-value db […]

You can use “atime” to get last time a file or directory was opened: ls -l –time=atimels -l –time=atime To test it just try to “cat” a file: cat /tmp/file.logcat /tmp/file.log Then type: ls -l –time=atime /tmp/file.logls -l –time=atime /tmp/file.log

If you get these errors with apt-get update: Err:52 https://packages.sury.org/php stretch Release server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none Reading package lists… Done E: The repository ‘https://packages.sury.org/php stretch Release’ does no longer have a Release file. N: Updating from such a repository can’t be done securely, and is therefore disabled by default. N: See […]

If you get this error message after apt-get update: Err:52 https://packages.sury.org/php stretch Release server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none Reading package lists… Done E: The repository ‘https://packages.sury.org/php stretch Release’ does no longer have a Release file. N: Updating from such a repository can’t be done securely, and is therefore disabled by default. N: […]