General :: How To Clear Out SSH Agent Entries (on Mac OS X)
Apr 16, 2011
I'm running OS X and it appears that after SSHing to several machines, using identity files, my ssh-agent builds up a lot of identity / keys and then offers too many sometimes to a remote machines, causing them to kick me off before connecting.
Received disconnect from 10.12.10.16: 2: Too many authentication failures for cwd
It's pretty obvious what's happening, and this page talks about it in more detail:
SSH servers only allow you to attempt to authenticate a certain number of times. Each failed password attempt, each failed pubkey/identity that is offered, etc, take up one of these attempts. If you have a lot of SSH keys in your agent, you may find that an SSH server may kick you out before allowing you to attempt password authentication at all. If this is the case, there are a few different workarounds.
Rebooting clears the agent and then everything works OK again. I can also add this line to my .ssh/config file to force it to use password authentication:
PreferredAuthentications keyboard-interactive,password
Anyhow, I saw the note on the page I referenced talking about deleting keys from the agent, but I'm not sure if that applies on a mac since they appear to be cleared after reboot anyhow. So, my question is, is there a simple way to clear out all keys in the ssh-agent (the same thing that happens at reboot)?
I run lastb every now and again to see who is trying to p0wn my box and it dates back to november 08. how do i clear these entries to i can get a more update view? or if you know a way i can do a 'more' or something so the IP's are not flying by that would be cool too!
I am working on Red Hat Linux since last six months and learning it steps by steps. like configurating ftp server,NSF ,DNS and then email server. I want to learn squid server but technically before going into it what you suggest me that may I first learn to configure Linux as a router,Firewall machine or do IP masquerading on a server. Because all these things are directly or indirectly involve in squid.So guide me because going to start squid i may understand Linux IP table ,how to add entries in it,how to delete entries ,I think you understand my point which i want to ask for guidence.
I am using gdm to start awesome wm via .xinitrc.I like awesomes usability and gnomes integrity and so far most of the startup programs work fine but i am fighting with ssh-agent. When starting gnome my password protected id_rsa is automatically added to ssh-agent on startup.. i am trying to achive the same with my .xinitrc started awesome wm.My .xinitrc:
i install cheops-ng-0.2.3.tar.gz on my fedra13,installation was ok,but when i press alt+f2 and type cheops-agent[the server],it won't run,there would be no process called cheops-agent,but when i run it in terminal i can run cheops-ng [the client],what is wrong?
After installing Slackware 13.1, I find that I am getting the message:scripts should use an informative user-agent string with contact informationwhen I access certain websites. Wiki pages, for example. This happens only with Konqueror. Any ideas as to what I might change to gain access to content,
I tried to install fedora in my pc. First I insert fedora dvd and install as per procedure then finally system says like that your installation is completed please reboot ur system. So, before reboot I tried to eject my fedora dvd but it couldn't come out. So after click reboot I eject that dvd. And I got error msg like "media test failure exiting intel boot agent". How can I overcome this error.
I've just install RALUS (linux backup agent) from BE 2010 R2 by manually uploading it to the server and then extracting it followed by executing the install script.
After the install i deleted the extracted directory, when i go to my Media Server i cannot browse for this server eventhough i already put the IP address of this server.
Here's my diagnostic regarding this error:
Code:
file: No such file or directory
Where can i download that file so that i can SCP to the proper directory in my Fedora COre 5 x86 Linux server ?
I am having a Oracle server installed on Linux server. I want to clear the buffers after a certain time interval. I use the following command for the same.
echo 3 > /proc/sys/vm/drop_caches
Can I have a script which will execute the above script after certain time interval OR a script which will execute the above command when certain memory size is reached.
#do some time consuming task here read -p "Give me some input: " input
Now as you might've guessed, if users press some random keys during the "time consuming task," they're read into input as well. how do I clear stdin (or at least ignore it) before I issue the read command?
I recently became co-owner of a server, however upon trying to ssh it became apparent the root admin gave me the wrong password by mistake; After trying several times with the wrong pasword thinking I might have mistyped I have now blacklisted myself, huzzah.
My system is old. Not debian.How do I clear out the mqueue directory? I don't want to delete it....just clear it out of the email that is clogging up my var partition. This old command doesn't seem to work anymore:find /var/spool/mqueue -exec rm'{}' ;Anybody know of the command to clear my mqueue.
I am using ubuntu and gnome-do and have in my gnome-do some bad shortcuts ( they even have a grey X icon ) that i cant figure out how to delete from the list. I thought gnome do has some cache but its been a while and they are still there :(
how to clear them from the list ?
Update: I deleted the ~/local/share/gnome-do folder and still no success
What is the Linux command to clear IP address of an interface without bringing it down and/or restarting network services. Seems strange ifconfig is able to change IP address but has no option to clear it, or am I wrong?
EDIT:As simple as ifconfig eth0 0.0.0.0. They should have put it in the man
i am dragged myself from windows to mint 10 julia..while downloading the screenshots is like <http://www.linuxmint.com/pictures/screenshots/julia/menu.png> but after installation i got only menu like the basic menulike in ubuntu.am new to minti installed inside windows.am i done anything wrong with installation
My var partition is full. The main culprit is NOW the mail file. What is the command to empty the mail files?The mqueue and clientmqueue files are now low on usage but the mail file is responsible for filling up the var partition.
In a performance test, I want to bypass the influence of cache of linux system (including page cache/inode cache and so on). I have tried O_DIRECT flag, but it's turned out that direct I/O is still "enjoy" the effect of some cache.Is there a thorough way to close the effect of system cache?
I am unable to use clear or cls command on bash shell. I have recently installed Cygwin and am using that for practicing unix commands.
I see that I can use Ctrl + L to clear the screen. I created an alias in my .bashrc to do the same as alias cls='^L'
This is how i defined other aliases e.g.
And they work. Hence I assume cls will work too but this is what I get when I try to give cls on command prompt. Am i missing something? Is there a way to do this?
Then someone suggested, You cannot alias keystrokes to commands or vice versa. You could just alias cls to an echo command: echo -en "x0c"
And I added the following to .bashrc,
Sourced the .bashrc file. No errors but cls still does not clear the screen. Infact when I typed the echo -en "x0c on command prompt as well, nothing happened. What does this command do?
I have a headless server running Centos and I often login in remotely to administer it. I have passwordless login and sometimes run commands remotely via ssh from a client machine. I've tried to shut the server remotely but have come across a small problem. Here is the output of the command I use to shutdown :Code:unclec@linux-desktop $ ssh centos 'sudo /sbin/shutdown -h now 'PASSWORD : 123ABCAs passwordless login is set up I do not need to enter a password to ssh BUT as I am running sudo on the server I am asked to enter my centos unclec password and this is shown in clear text on my local machine terminal. Is there a way to prevent this or should I edit the sudoers file on centos so it does not ask me to enter the password when "sudoing" ?
I am using an internal toy svn server, and svn client seems to be configured to store passwords in gnome-keyring by default. How can I disable it or at least switch to kwallet?I am using Debian Testing.
Closest analogy I can compare what I want to, is like the `sync` command, which writes out all stuff in the disk buffers, freeing the buffers.Instead of disk buffers, I want to 'clean out' my RAM and SWAP of any/all junk that's accumulated in there over the time my PC has been up. I've long wondered about this, but never asked, though I recall searching around several times..When I first boot it cold and log in, the memory usage bar on my desktop is near zero, and the swap is empty. But after a week or 2 or 3 or more of uptime, and with Firefox always running with a dozen tabs or so at any given time, I end up with all the memory full or 'filled with cached stuff', and the swap space is filled to capacity.Curiousity: I blame Firefox for leaking memory, but even if that's still the case today (historically it was) can this all be blamed on Firefox? Or what-all causes this, besides Firefox- just..Everything?
Here's current stats:
Code:
sasha@reactor: uptime 21:21:42 up 30 days, 10:07, 3 users, load average: 0.02, 0.05, 0.01 sasha@reactor: free total used free shared buffers cached
[code]...
So, 3.8 of 4 Gib of RAM is occupied, and the 1 Gib swap space is jammed full 100%. This must slow things down to some degree, yes? I mean, the kernel does have to keep track of this, right?Of course closing all the applications doesn't make a difference (not an appreciable one anyhow) and the only way I have found to start fresh is to reboot.
What they don't make clear on most manpages is that you can't simply usebzip2 thisfile.xxx that gives bzip2 free rein to include the original extension in the filename. You must use the -c tag (and better than that, the -c and -k tags, the latter of which leaves the original file untouched post-compression), then -if you wish- the level of compression to apply to a file (in the range of 1-9, with 1 being next-to-no compression and 9 the highest level of compression), followed by the filename/s to compress, then after a single space, a right-hand carat (">"), then another single space and the name you want to give the compressed bzip2 file, remembering to add the extension ".bzip2" (no quotes) to your filename.
Sounds pretty obvious, doesn't it? Well, I thought so too once I read a particular manual page and reasoned it out. Then I remembered the 15 or so minutes it took me to Google myself to that manpage, and I decided it was good Net citizenship to put up a little step-by-step like this one on an appropriate forum on which I was already a registered member.
It isn't just the C++ heads or the Python jockeys who need things broken down to their simplest bits for them from time to time. Newbies and near-newbies do, too. I took it as read that was the reason for this subforum, so here I went.
Running SunGard Banner software on RHEL 4.2 x86-32 bit Linux server Oracle Application 10.1.2.3 samba enabled. Users run processes/reports that are logged in a daily log file. In our daily job submission log files the user password shows up as clear text.The password shows up as $PSWD (sample from the logfile):
My landlord upstairs just got a new modem and WiFi by Clear.com and when trying to get the WiFi to work...it just wouldn't connect with my laptop. They have 2 computers upstairs, one laptop and one desktop that recognized the WiFi and don't have any trouble using it. Wondering if there is something I have accidently clicked or changed to make it not connect. It does not have an error message, it just does not connect completely.
