Starting with version 4.9 OpenSSH (not available in centos 5.x but ChrootDirectory feature was backported) has an internal-sftp subsystem: Subsystem sftp internal-sftp And then block other uses: Match group sftponly ChrootDirectory /upload/%u X11Forwarding no AllowTcpForwarding no AllowAgentForwarding no ForceCommand internal-sftp Add your users to the sftponly group. The chroot directory must be owned by root, … Read more
You can use the -s switch to su to run a particular shell su -s /bin/bash -c ‘/path/to/your/script’ testuser (Prepend sudo to the above if testuser is a passwordless user.)
Use screen, a free terminal multiplexer developed by the GNU Project that will allow you to have several terminals in one. You can start a session and your terminals will be saved even when you connection is lost, so you can resume later or from home.
You can renumber the current window with ctrl+a :number x where x is a numeric argument. You can rename the current window with ctrl+a A
I asked this question over on SO and it got moved here. That said I no longer have the ability to edit the question as if I owned it, or even accept the correct answer, but this turned out to be the true reason why and how to solve it: Found here User “rohandhruva” on … Read more
As a general rule, use REJECT when you want the other end to know the port is unreachable’ use DROP for connections to hosts you don’t want people to see. Usually, all rules for connections inside your LAN should use REJECT. For the Internet, With the exception of ident on certain servers, connections from the … Read more
Under Linux, the usermod command changes user names. It modifies the system account files to reflect the changes that are specified on the command line. To change just the username: usermod –login new_username old_username To change the username and home directory name: usermod –login new_username –move-home –home path_to_the_new_home_dir old_username You may also want to change … Read more
According to postqueue(1) you can simply run postqueue -f to flush your mail queue. If the mails aren’t delivered after flushing the queue but are being requeued instead, you might want to check your mail logs for errors. Taking a peek at postsuper(1) might also be helpful. Maybe the messages are on hold and need … Read more
I will post an answer to stop bugging with comments. Let’s call both parties by their function on this: The NFS server, from now on “the server”; and the image server, from now on “the client”. When you mount a remote directory, you will see the files on both the server and the client. However … Read more
The switch you need is –parents, e.g.: jim@prometheus:~$ cp –parents test/1/.moo test2/ jim@prometheus:~$ ls -la test2/ total 42 drwxr-xr-x 3 jim jim 72 2010-09-14 09:32 . drwxr-xr-x 356 jim jim 43136 2010-09-14 09:32 .. drwxr-xr-x 3 jim jim 72 2010-09-14 09:32 test jim@prometheus:~$ ls -la test2/test/1/.moo -rw-r–r– 1 jim jim 0 2010-09-14 09:32 test2/test/1/.moo