Reading package lists... Done Building dependency tree Reading state information... Done Package fort77 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only availabl

What is the output of :

lsb_release -a; uname -a

Thanks

sudo apt-get install fortran77-compiler

try this .. but please give output which Andrew Asked

Thanks
~Jeet

this is d output m gettng

zenab@zenab-VirtualBox:~$ Reading package lists... Done Building dependency tree Reading state information... Done Package fort77 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only availabl
Reading: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Ubuntu
Ubuntu: command not found
zenab@zenab-VirtualBox:~$ “apt” package
“apt”: command not found
zenab@zenab-VirtualBox:~$ Questions
Questions: command not found
zenab@zenab-VirtualBox:~$ Question #219829
Question: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Asked by zenab 57 minutes ago
Asked: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ whILE downloading fort77 following error occured:
whILE: command not found
zenab@zenab-VirtualBox:~$ Reading package lists... Done
Reading: command not found
zenab@zenab-VirtualBox:~$ Building dependency tree
Building: command not found
zenab@zenab-VirtualBox:~$ Reading state information... Done
Reading: command not found
zenab@zenab-VirtualBox:~$ Package fort77 is not available, but is referred to by another package.
No command 'Package' found, did you mean:
 Command 'package' from package 'mailagent' (universe)
Package: command not found
zenab@zenab-VirtualBox:~$ This may mean that the package is missing, has been obsoleted, or
This: command not found
zenab@zenab-VirtualBox:~$ is only available from another source
is: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ E: Package 'fort77' has no installation candidate
E:: command not found
zenab@zenab-VirtualBox:~$ Question information
Question: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Language:
Language:: command not found
zenab@zenab-VirtualBox:~$ English Edit question
English: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Status:
Status:: command not found
zenab@zenab-VirtualBox:~$ Answered
Answered: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ For:
For:: command not found
zenab@zenab-VirtualBox:~$ Ubuntu apt Edit question
Ubuntu: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Assignee:
Assignee:: command not found
zenab@zenab-VirtualBox:~$ No assignee Edit question
No: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Last query:
No command 'Last' found, did you mean:
 Command 'last' from package 'sysvinit-utils' (main)
 Command 'nast' from package 'nast' (universe)
Last: command not found
zenab@zenab-VirtualBox:~$ 57 minutes ago
57: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Last reply:
No command 'Last' found, did you mean:
 Command 'last' from package 'sysvinit-utils' (main)
 Command 'nast' from package 'nast' (universe)
Last: command not found
zenab@zenab-VirtualBox:~$ 14 minutes ago
14: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Related bugs
Related: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Link existing bug
No command 'Link' found, did you mean:
 Command 'dink' from package 'freedink-engine' (universe)
 Command 'link' from package 'coreutils' (main)
 Command 'ink' from package 'ink' (universe)
Link: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ Related FAQ:
Related: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ None Link to a FAQ
No command 'None' found, did you mean:
 Command 'one' from package 'opennebula' (universe)
 Command 'cone' from package 'cone' (universe)
None: command not found
zenab@zenab-VirtualBox:~$ actionparsnip (andrew-woodhead666) said 31 minutes ago: #1
bash: syntax error near unexpected token `andrew-woodhead666'
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ What is the output of :
No command 'What' found, did you mean:
 Command 'chat' from package 'ppp' (main)
 Command 'jhat' from package 'openjdk-6-jdk' (main)
 Command 'jhat' from package 'openjdk-7-jdk' (universe)
What: command not found
zenab@zenab-VirtualBox:~$
zenab@zenab-VirtualBox:~$ lsb_release -a; uname -a

nd jeet the output for ur command is:
Reading package lists... Error!
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/in.archive.ubuntu.com_ubuntu_dists_precise_restricted_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.
zenab@zenab-VirtualBox:~$