# Problem Reproduction Steps:
1. Created user with:
   useradd -d /var/www/mywebsite.com -m newuser
   passwd newuser
2. SSH login as newuser shows:
   - Tab autocomplete fails (inserts space)
   - Arrow keys don't show command history

When creating users via useradd (as opposed to adduser on Debian-based systems), the system doesn't automatically set up the user's shell environment files. The key files typically missing are:

• ~/.bashrc - Contains shell behavior configurations
• ~/.bash_profile or ~/.profile - Login initialization

First check which shell is assigned to the user:

grep newuser /etc/passwd
# Should show something like:
# newuser:x:1001:1001::/var/www/mywebsite.com:/bin/bash

Here's how to properly set up the environment:

# As root:
cp /etc/skel/.bashrc /var/www/mywebsite.com/
cp /etc/skel/.profile /var/www/mywebsite.com/
chown newuser:newuser /var/www/mywebsite.com/.bashrc
chown newuser:newuser /var/www/mywebsite.com/.profile

# Alternatively, create the files manually:
cat > /var/www/mywebsite.com/.bashrc << 'EOF'
# ~/.bashrc: executed by bash(1) for non-login shells.
[ -z "$PS1" ] && return
PS1='\u@\h:\w\$ '
umask 022
[ -x /usr/bin/lesspipe ] && eval "$(lesspipe)"
if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi
if [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
fi
EOF

After setting up the files:

ssh newuser@mywebsite.com
# Test tab completion:
cd /var/www/myweb[tab] # Should now complete to mywebsite.com
# Test history:
echo "test command"
[up arrow] # Should now show previous command

For batch user creation, consider these approaches:

# Method 1: Using adduser (Debian/Ubuntu)
adduser --home /var/www/mywebsite.com newuser

# Method 2: Template the skeleton directory
mkdir -p /etc/custom_skel
cp /etc/skel/.bash* /etc/custom_skel/
useradd -k /etc/custom_skel -d /var/www/mywebsite.com -m newuser

If issues persist, check:

# 1. Shell permissions
ls -la /var/www/mywebsite.com | grep bash

# 2. Global completion settings
ls -l /etc/bash_completion.d/

# 3. Terminal type
echo $TERM

# 4. Inputrc configuration
cat /etc/inputrc | grep tab

When creating a new Linux user via useradd, you might encounter missing shell features like:

• Tab autocomplete not expanding paths
• Command history (arrow keys) not working
• No colored prompt or other shell customizations

This happens because useradd doesn't automatically create the user's bash configuration files. Unlike adduser (Debian/Ubuntu) which handles this, useradd requires manual setup.

Check if the skeleton files were copied:

ssh newuser@mywebsite.com
ls -la ~/

If you don't see .bashrc, .profile, and .bash_logout, we need to create them.

As root, copy the skeleton files:

cp /etc/skel/.bashrc /var/www/mywebsite.com/
cp /etc/skel/.profile /var/www/mywebsite.com/
cp /etc/skel/.bash_logout /var/www/mywebsite.com/
chown newuser:newuser /var/www/mywebsite.com/.bash*

For future users, include the skeleton files during creation:

useradd -d /var/www/mywebsite.com -m -k /etc/skel newuser

On Debian/Ubuntu systems, use the more comprehensive tool:

adduser --home /var/www/mywebsite.com newuser

After implementing any solution:

ssh newuser@mywebsite.com
echo $SHELL
source ~/.bashrc
type -a ls

For web server users, consider adding to .bashrc:

# Set default umask for web files
umask 002

# Add /usr/local/bin to PATH
export PATH=$PATH:/usr/local/bin

# Useful aliases
alias www='cd /var/www/mywebsite.com'
alias logs='tail -f /var/log/apache2/error.log'

For system-wide defaults, edit /etc/skel/.bashrc which will be copied to all new users.