post_install_mosh.sh

#!/bin/bash
# Configure UTF-8 locale for mosh server (run as root)
set -e

[[ $EUID -ne 0 ]] && echo "Please run as root" && exit 1
[[ -f /etc/os-release ]] && . /etc/os-release || { echo "Cannot detect OS"; exit 1; }

echo "==> Configuring UTF-8 locale for mosh on $ID..."

case "$ID" in
    ubuntu|debian)
        sed -i 's/^# *en_US.UTF-8/en_US.UTF-8/' /etc/locale.gen 2>/dev/null || true
        locale-gen en_US.UTF-8
        update-locale LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 ;;
    centos|rhel|fedora)
        command -v dnf &>/dev/null && dnf install -y glibc-langpack-en || yum install -y glibc-langpack-en
        localectl set-locale LANG=en_US.UTF-8 ;;
    arch|manjaro)
        sed -i 's/^#en_US.UTF-8/en_US.UTF-8/' /etc/locale.gen
        locale-gen && localectl set-locale LANG=en_US.UTF-8 ;;
    *)
        echo "Unsupported OS: $ID. Run manually: locale-gen en_US.UTF-8" && exit 1 ;;
esac

echo -e "\n==> Locale verification:"
locale -a | grep -i utf-8 || locale -a | grep -i utf8
echo -e "\n✓ Done! Log out and back in for changes to take effect."