Packet Tracer 7.0

gradinaruvasile · 03-02-2017, 08:36 AM

Sudo...

Code:

sudo rm -rf /opt/pt

danishparvez · 03-02-2017, 08:39 AM

Thanks a lot. I really appreciate it.
Do you know any website or anywhere on internet that I can learn to use linux.

gradinaruvasile · 03-02-2017, 09:01 AM

Resources are plenty on the internet (i use google when i have something to look up), as you see on forums you will get help if you come with a specific well defined problem.
Honestly to learn linux you have to use it and solve issues you encounter as you go. It's not mandatory to use it as your main OS if you are not that familiar with it, you can use it in a virtual machine. I don't recommend dual booting either as that is too much of a hassle usually.

danishparvez · 03-02-2017, 11:03 AM

Is it good generally if I use it as main OS coz honestly since I took it as a course in my studies I liked it from the very beginning and I stopped using windows since then as that was my main OS then

Deixus · 03-04-2017, 06:51 AM

Hi gradinaruvasile

This is my packets when put en the comman line "aptitude", the line --/java show up.

http://i1210.photobucket.com/albums/...4%20083928.png

Saludos!

gradinaruvasile · 03-04-2017, 05:58 PM

Quote:

Originally Posted by Deixus

Hi gradinaruvasile

This is my packets when put en the comman line "aptitude", the line --/java show up.

http://i1210.photobucket.com/albums/...4%20083928.png

Saludos!

Well the idea is to find your actual "javaws' executable then find the package from which it came.
The following example is from my system which runs Debian:
First you find the actual "javaws":

Code:

$which javaws
/usr/bin/javaws
laca@laca-desktop:~$ ls -al /usr/bin/javaws
lrwxrwxrwx 1 root root 24 May  2  2016 /usr/bin/javaws -> /etc/alternatives/javaws

Then you will have to find the exact executable - because java and it's companion packages are using the "alternatives" system that permits you to have multiple executables of different versions installed in parallel and you can select which one launches "javaws" in this case. Basically you have to find the REAL executable at the end of a possible chain of links.

Code:

laca@laca-desktop:~$ ls -al /etc/alternatives/javaws
lrwxrwxrwx 1 root root 48 May  2  2016 /etc/alternatives/javaws -> /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/javaws
$ ls -al /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/javaws
-rwxr-xr-x 1 root root 2756 Jan 14 17:46 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/javaws

Now that we found the REAL executable, we will do a reverse search for it's "parent" package:

Code:

laca@laca-desktop:~$ dpkg --search /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/javaws
icedtea-netx:amd64: /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/javaws

Now we will look at the package version:

Code:

$apt-cache policy icedtea-netx
icedtea-netx:
  Installed: 1.6.2-3.1
  Candidate: 1.6.2-3.1
  Version table:
 *** 1.6.2-3.1 500
        500 http://ftp.debian.org/debian testing/main amd64 Packages
          2 http://ftp.debian.org/debian unstable/main amd64 Packages
        100 /var/lib/dpkg/status

Deixus · 03-07-2017, 11:35 AM

This is the output when put en the command line "which javaws" and "ls -al /usr/bin/javaws"

Code:

estudiante@debian:~$ sudo which javaws
/usr/bin/javaws
estudiante@debian:~$ ls -al /usr/bin/javaws
lrwxrwxrwx 1 root root 24 dic 12 17:02 /usr/bin/javaws -> /etc/alternatives/javaws

Ok, following your instruction this is the output when put en the command line "ls -al /etc/alternatives/javaws"
and "sudo ls -al /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws"

Code:

estudiante@debian:~$ sudo ls -al /etc/alternatives/javaws
lrwxrwxrwx 1 root root 47 dic 12 17:02 /etc/alternatives/javaws -> /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws
estudiante@debian:~$ sudo ls -al /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws
-rwxr-xr-x 1 root root 2635 may 26  2016 /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws

The following line is when put en the command line "sudo dpkg --search /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws"

Code:

estudiante@debian:~$ sudo dpkg --search /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws
icedtea-netx:i386: /usr/lib/jvm/java-7-openjdk-i386/jre/bin/javaws

When put in the command line "apt-cache policy icedtea-netx" show up this:

Code:

estudiante@debian:~$ apt-cache policy icedtea-netx
icedtea-netx:
  Instalados: 1.5.3-1
  Candidato:  1.5.3-1
  Tabla de versión:
 *** 1.5.3-1 0
        500 http://httpredir.debian.org/debian/ jessie/main i386 Packages
        100 /var/lib/dpkg/status

Sorry for the late answer and my bad english.