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1500 questions
84
votes
8 answers

Is it possible to use rsync over sftp (without an ssh shell)?

Rsync over ssh, works great every time. However, trying to rsync to a host which allows only sftp logins, but not ssh logins, provides the following error: rsync -av /source ssh user@remotehost:/target/ protocol version mismatch -- is your shell…
Tom Feiner
  • 18,038
84
votes
16 answers

What causes SSH error: kex_exchange_identification: Connection closed by remote host?

I setup a SSH server online that is publicly accessible by anyone. Therefore, I get a lot of connections from IPs all over the world. Weirdly, none actually try to authenticate to open a session. I can myself connect and authenticate without any…
soliz
  • 942
83
votes
4 answers

How to get Apache2 to redirect to a subdirectory

I am running apache2 on Debian etch, with multiple virtual hosts. I want to redirect so that http://git.example.com goes to http://git.example.com/git/ Should be really simple, but Google isn't quite cutting it. I've tried the Redirect and Rewrite…
Hamish Downer
  • 9,510
83
votes
12 answers

How can I run arbitrarily complex command using sudo over ssh?

I have a system that I can only log in to under my username (myuser), but I need to run commands as other user (scriptuser). So far, I have come up with the following to run the commands I need: ssh -tq myuser@hostname "sudo -u scriptuser bash -c…
VoY
  • 1,285
83
votes
5 answers

bad ownership or modes for chroot directory component

I created the user MY_USER. Set his home dir to /var/www/RESTRICTED_DIR, which is the path he should be restricted to. Then I edited sshd_config and set: Match user MY_USER ChrootDirectory /var/www/RESTRICTED_DIR Then I restarted ssh. Made…
MultiformeIngegno
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83
votes
1 answer

Nginx - Meaning of the ~ (tilde) in the location block of the nginx.conf?

What is the meaning of the tilde after the location block in the nginx configuration? for example location ~ ^/download/(.*)$ { alias /home/website/files/$1; } What is the difference between with and without the "~" ?
mahen3d
  • 4,422
83
votes
15 answers

Get list of AD groups a user is a member of

Suppose I have the user id of a user in Active Directory. I'd like to get a list of all AD groups in which that user is currently a member of. How can I do this from the Windows command line? I've tried the following: dsget user "DC=jxd123"…
JustBeingHelpful
  • 2,004
83
votes
7 answers

Why use Chef/Puppet over shell scripts?

New to Puppet and Chef tools. Seems like the job that they are doing can be done with shell scripting. Maybe it was done in shell scripts until these came along. I would agree they are more readable. But, are there any other advantages over shell…
resting
  • 1,059
83
votes
5 answers

Change default directory when I SSH to server

I was wondering if there is a way to change the default directory that I get put into after I SSH into my Ubuntu server. 99% of the time when I'm logging into my server, it is to access files within a specific directory: /var/www/websites Is there…
Bob Flemming
  • 1,285
83
votes
4 answers

How to find the physical volume(s) that hold a logical volume in LVM

I have a volume group (VG) that contains two physical volumes (PV). Several logical volumes (LV) in the VG are likely to use extents on both PVs. Is there a way to tell which LVs occupy space on which PVs?
Paul
  • 1,988
83
votes
1 answer

What does "debconf: delaying package configuration, since apt-utils is not installed" mean?

I have just installed Debian and I was just installing some packages using apt-get instal when I saw this message: debconf: delaying package configuration, since apt-utils is not installed What does this mean? And once I have installed apt-utils…
David
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83
votes
3 answers

What does that mean: packages excluded due to repository priority protections

When updating with yum i recieve the following message: yum update Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached hostfile * atomic: www7.atomicorp.com * base: mirror.de.leaseweb.net * extras: mirror.de.leaseweb.net …
mate64
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83
votes
16 answers

Hundreds of failed ssh logins

Every night I get hundreds, sometimes thousands, of failed ssh logins on my RedHat 4 server. For firewall reasons from remote sites, I need to run on the standard port. Is there anything I should be doing to block this. I notice that many come from…
MattMcKnight
  • 932
83
votes
9 answers

Dump a linux process's memory to file

Is it possible to dump the current memory allocated for a process (by PID) to a file? Or read it somehow?
Fragsworth
  • 1,201
83
votes
3 answers

What does * * * * * (five asterisks) in a cron file mean?

The first noncomment line in a legacy crontab file begins with five asterisks: * * * * * ([a_command]) >/dev/null 2>&1 The authors are gone, so I do not know their intent. What does all-wildcards mean to (Solaris 8) cron? The betting here is…
Thomas L Holaday
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