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Install DropBox on RHEL and RHEL 5 6

Posted by acts268 on June 29th 2011

  • Source:

To install Dropbox on Red Hat Enterprise Linux 5 or 6 follow the following:

  • Open a terminal console, log in with your username and enter the home folder:

cd ~

  • Download the version of Dropbox (32 64 bit or bits, depending on the operating system that we have)

To find out if we 32 64 bits or write:

uname -r

It appears this:

32 Bits => x86

64 Bits => x86_64

32 version Bits:

wget -O dropbox.tar.gz ""

64 version Bits:

wget -O dropbox.tar.gz ""
  • Unzip the file folder ne Home:

tar -xvzf dropbox.tar.gz

  • run dropboxd

~ / .dropbox-Dist / dropboxd

  • We will see a result like this:

This client is not linked to any account ... Please visit to link this machine.

  • Dropbox creates a folder in ~ / Dropbox and begin to synchronize with this folder.

Dropbox to start at the beginning we will:

System / Preferences / More Preferences / Sessions / Startup Programs and add /home/nuestro_usuario/.dropbox-dist/dropbox

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Posted by General, Linux - Ubuntu, Red Hat | No Comments »

RHSA and RHCE Exam

Posted by acts268 on June 29th 2011

Hello everyone I provided them with information about certifications in Red Hat Enterprise Linux in case anyone is interested in presenting such information comes from my instructor page:

Overview of the RHCE Exam / RHCSA:

    • It is completely and utterly practical, no part of theory.
    • It involves setting an entire server. It is corrected when everyone has finished and NOT the note said at the time. When finished, people can go there directly. The result is packed, encrypted and sent to Red Hat. Officially the result is received within 3 working days, but usually it is received before.
    • Unlike what happened to the test in the RHEL5 version, they are separated RHCSA and RHCE.
    • For consideration only allowed to carry a pen. It will provide students with paper so they can write anything they want on it, but then that paper it is the examiner. Nothing else is allowed.
    • Bring your ID or passport, it will be collected to start the test, along with mobile phones and PDAs. All this will be returned upon completion of the exam.
    • The official installation DVD from Red Hat Enterprise Linux will be accessible at all times through the network. It can access the RPMs whenever you want (unless the machine has no network at that time).
    • The network is monitored to prevent unauthorized connections.

  • To pass the exam the following is required:
    • RHCSA: Getting a 70 2% in half hours.
    • RHCE: Getting a 70% in 2 hours.

  • Total duration of the test:
    • RHCSA:
      • Start, fill in the online form, verify identities: 30 minutes
      • Review: 2 hours
      • Total time: 3: 00h. If you start at 10: 00h, at 13: 00h normally has finished
    • RHCE:
      • Start, fill in the online form, verify identities: 30 minutes
      • Review: 2 hours
      • Total time: 2: 30h. If you start at 10: 00h, at 12: 30h normally has finished

  • General advice on the review:
    • The test itself is not difficult, but if you need to do many things in a relatively short time. It is absolutely vital to have confidence with the system, especially with the Help System. If given a day to do the test, virtually everyone would, but if you lose too much time looking for things will not be approved.
    • I repeat: the review is more of a stress test that knowledge, you have to do many things in a short time.
    • Another important recommendation is to master RPM, YUM and repositories. This can save time during the exam.
    • The RHCSA test is relatively easy, but the RHCE is quite difficult. They usually pass a 85% and 33% of people respectively, provided they have attended the course associated with each test. If you have not attended any courses, the percentage drops.
    • Mastering tools Help System Red Hat Enterprise Linux is VITAL.
    • Do not stand too much on the parts that we have difficulty is very important. Keep up the examination and when terminéis the first round, return to this part more calmly.

tags: ,
Posted by RedHat certification, Linux - Ubuntu, Red Hat | No Comments »

Lost SSH Authentication

Posted by acts268 on June 8th 2011

When we connect through SSH-X (GUI) and the team we connect what we format or change it, when we try to connect again we displayed the following error:



Someone eavesdropping on you Could be right now (man-in-the-middle attack)!

It is possible Also That the RSA host key has just been changed.

The fingerprint for the RSA key sent by the remote host is


Please contact your system administrator.

It is because although we place him the same name and same credentials IP has changed, to fix what we have to do is:

Edit the file:

.ssh / known_hosts

and delete the line containing the previous credential (In this case our team is called server9 and our IP is

server9, ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAu0oRv8ra3NvPkTwtE2tkA5VkvEu+0pP8Uj/xbIVoIMEaA9vPmy93YQxGluYuFwDFj4zuA+2TN5dkON3nhhczPhN3mkNtBf0HpUsIpyL0KYE8pkMkuqHPuGaDOxAqpyistSge2bvAZODudi3ehpspPz52Cnmb2mKEfcVJZkp43VEXXwV/Pxtz/HsfUAzWgs5NjIQ14I337eVHKePZ/W2BhrD6v5Oqtd344X9gXe07u9kQv7ml3qha1wurjkLQ9BcJ4vx25gj2q4kmimeATJ8pAaMP8pWhNuE8I+FindsWqN/0qfugSXSE+wsnyrVNQVRWgsYgDbaXROV+/KvTKB9XOw

We try to connect again:

[[Email protected] ~] # ssh -X server9

The authenticity of host 'server9 (' can not be established.

RSA key fingerprint is 48:cb:02:d0:dd:42:17:90:e9:42:20:86:6f:a5:c2:ba.

Are you sure you want to continue connecting (yes / no)? And it is

Warning: Permanently added 'server9,' (RSA) to the list of known hosts.

/usr/bin/xauth: creating new authority file /root/.Xauthority

By doing this you add a new credential to the file .ssh / known_hosts allowing us to connect properly.

tags: ,
Posted by Linux - Ubuntu, Red Hat | 2 Comments »

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