One of the tricks I follow is to put # in the beginning while using the rm command. root@localhost:~# #rm -rf / This prevents accidental execution of rm on the wrong file/directory. Once verified, remove # from the beginning. This trick works, because in Bash a word beginning with # causes that word and all … Read more
The sites-* folders are managed by nginx_ensite and nginx_dissite. For Apache httpd users who find this with a search, the equivalents is a2ensite/a2dissite. The sites-available folder is for storing all of your vhost configurations, whether or not they’re currently enabled. The sites-enabled folder contains symlinks to files in the sites-available folder. This allows you to … Read more
With yum-utils installed, repoquery will provide the information you seek (here ‘epel’ being the repository). $ repoquery -i cherokee Name : cherokee Version : 0.99.49 Release : 1.el5 Architecture: i386 Size : 8495964 Packager : Fedora Project Group : Applications/Internet URL : http://www.cherokee-project.com/ Repository : epel Summary : Flexible and Fast Webserver Description : Cherokee … Read more
Quoting Thomas Pircher‘s website (cc-by-sa): ifconfig vs ip The command /bin/ip has been around for some time now. But people continue using the older command /sbin/ifconfig. Let’s be clear: ifconfig will not quickly go away, but its newer version, ip, is more powerful and will eventually replace it. The man page of ip may look … Read more
Try Match in sshd_config: Match User user1,user2,user3,user4 PasswordAuthentication no Or by group: Match Group users PasswordAuthentication no Or, as mentioned in the comment, by negation: Match User !root PasswordAuthentication no Note that match is effective “until either another Match line or the end of the file.” (the indentation isn’t significant)
It means your file has extended permissions called ACLs. You have to run getfacl <file> to see the full permissions. See Access Control Lists for more details.
At least two ways: Use the — argument. cd — -2 This uses a convention common to GNU tools which is to not treat anything that appears after — as a command line option. As a commenter noted, this convention is also defined in the POSIX standard: Default Behavior: When this section is listed as … Read more
UPDATE: For an actual answer see zero_r’s answer below This isn’t an answer, but a workaround. Use screen. When you first log in, run screen. You get another shell, run commands in that. If you’re disconnected, the screen process keeps the terminal alive so that your shell and the processes it is running don’t fall … Read more
Summary Risks of using LVM: Vulnerable to write caching issues with SSD or VM hypervisor Harder to recover data due to more complex on-disk structures Harder to resize filesystems correctly Snapshots are hard to use, slow and buggy Requires some skill to configure correctly given these issues The first two LVM issues combine: if write … Read more
EDIT thanks to medina’s comment: According to the man page, you should be able to write ALL ALL = (ALL) NOPASSWD: ALL to allow all users to run all commands without a password. For reference, I’m leaving my previous answer: If you add a line of the form %wheel ALL = (ALL) NOPASSWD: ALL to … Read more