I am not able to install any software (from software center) in ubuntu, after installing it gets failed and when i checked i detail, below error is coming .. please help me out for installing it,

installArchives() failed: perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

    LANGUAGE = (unset),

    LC_ALL = (unset),

    LANG = "en_IN.ISO8859-1"

    are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

    LANGUAGE = (unset),

    LC_ALL = (unset),

    LANG = "en_IN.ISO8859-1"

    are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

    LANGUAGE = (unset),

    LC_ALL = (unset),

    LANG = "en_IN.ISO8859-1"

    are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_MESSAGES to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

Setting up install-info (5.2.0.dfsg.1-2) ...

/etc/environment: line 2: JAVA_HOME: command not found

dpkg: error processing package install-info (--configure):

 subprocess installed post-installation script returned error exit status 127

Errors were encountered while processing:

 install-info

Error in function: 

Setting up install-info (5.2.0.dfsg.1-2) ...

/etc/environment: line 2: JAVA_HOME: command not found

dpkg: error processing package install-info (--configure):

 subprocess installed post-installation script returned error exit status 127

I have following output for /etc/environment, java_home is already installed there.

output of cat /etc/environment

PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/u‌​sr/local/games" 

JAVA_HOME =/usr/lib/jvm/jdk1.7.0/bin 

I have updated the language support and getting the below error

amulbhatia@Nadar:~$ sudo apt-get install language-pack-en

[sudo] password for amulbhatia: 

Reading package lists... Done

Building dependency tree       

Reading state information... Done

The following package was automatically installed and is no longer required:

  kde-l10n-engb

Use 'apt-get autoremove' to remove it.

The following extra packages will be installed:

  language-pack-en-base

The following packages will be upgraded:

  language-pack-en language-pack-en-base

2 upgraded, 0 newly installed, 0 to remove and 321 not upgraded.

1 not fully installed or removed.

Need to get 0 B/459 kB of archives.

After this operation, 1,421 kB disk space will be freed.

Do you want to continue? [Y/n] y

Setting up install-info (5.2.0.dfsg.1-2) ...

/etc/environment: line 2: JAVA_HOME: command not found

dpkg: error processing package install-info (--configure):

 subprocess installed post-installation script returned error exit status 127

E: Sub-process /usr/bin/dpkg returned an error code (1)

Thanks in advance friends,