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$ sudo apt-get install wondershaper python-qt4 arp-scan dsniff arptables



Reading package lists... Done

Building dependency tree       

Reading state information... Done

python-qt4 is already the newest version (4.11.4+dfsg-1build4).

The following additional packages will be installed:

  libnet1 libnids1.21

The following NEW packages will be installed

  arp-scan arptables dsniff libnet1 libnids1.21 wondershaper

0 to upgrade, 6 to newly install, 0 to remove and 6 not to upgrade.

1 not fully installed or removed.

Need to get 0 B/419 kB of archives.

After this operation, 1,468 kB of additional disk space will be used.

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

Setting up install-info (6.1.0.dfsg.1-5) ...

/usr/sbin/update-info-dir: 5: /etc/environment: Syntax error: Unterminated quoted string

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

 subprocess installed post-installation script returned error exit status 2

Errors were encountered while processing:

 install-info

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

Copy the following in a file and save it in your Desktop as askubuntu.

#!/bin/sh

# update-info-dir

# create a dir file from all installed info files

# Copyright 2009, 2014 Norbert Preining

# GPLv2



INFODIR=/usr/share/info



set -e



#

# since user's environment is taken over into root account when sudo-ing

# we don't want that one's user LANGUAGE setting changes the messages in

# the dir file. Unset LANGUAGE and reload /etc/environment to get

# the system wide settings. See bug #536476

unset LANGUAGE

unset LANG

if [ -r /etc/environment ] ; then

  . /etc/environment

fi

if [ -r /etc/default/locale ] ; then

  . /etc/default/locale

fi



Help ()

{

    echo "

SYNOPSIS: update-info-dir [-h,--help] [info-directory]



(re-)creates the index of available documentation in info format

(the file /usr/share/info/dir) which is usually presented by info browsers

on startup."



    exit 0

}





if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then

    Help

fi



if [ -n "$1" ] ; then

  INFODIR="$1"

fi



if [ ! -d "$INFODIR" ] ; then

  echo "Not a directory: $INFODIR." >&2

  exit 1

fi



if [ -r "$INFODIR/dir" ] ; then

  rm -f "$INFODIR/dir.old"

  cp $INFODIR/dir $INFODIR/dir.old

fi



# we have to remove the dir file not make install-info being surprised

rm -f "$INFODIR/dir"



errors=0

find "$INFODIR" -type f | while read file ; do

  case $file in

    */dir|*/dir.gz|*/dir.old|*/dir.old.gz|*-[0-9]|*-[0-9].gz|*-[1-9][0-9]|*-[1-9][0-9].gz|*.png|*.jpg)

      # these files are ignored

      continue

      ;;

    *)

      install-info "$file" "$INFODIR/dir" || {

        errors=$((errors+1))

      }

      ;;

  esac

done



if [ $errors -gt 0 ] ; then

  exec >&2

  echo

  echo "Updating the index of info documentation produced $errors errors."

fi



exit 0



# vim:set expandtab tabstop=2: #

• 
  

  Open a terminal and run:

  
  
  
  
  
  • sudo cp /usr/sbin/update-info-dir /usr/sbin/update-info-dir-backup
  
  
  • sudo rm /usr/sbin/update-info-dir
  
  
  • sudo cat ~/Desktop/askubuntu >> /usr/sbin/update-info-dir
  
  
  • sudo chmod +x /usr/sbin/update-info-dir
  
  
  
  

I had the same problem and my solution was to delete a quote-sign in /etc/default/locale from this:

LC_TIME=""en_US.UTF-8"

to this

LC_TIME="en_US.UTF-8"