Shell - Erase logs 🤫

cleanup.sh

#!/bin/bash

if [ $# -lt 2 ]; then
    echo "Usage: $0 <minutes_to_keep_logs> <commands_to_keep_in_history>"
    exit 1
fi

logs_dir="/var/log"
minutes_to_keep_logs=$1
commands_to_keep_in_history=$2

delete_last_commands() {
    local history_file="$1"
    if [ -f "$history_file" ]; then
        total_lines=$(wc -l < "$history_file")
        lines_to_keep=$((total_lines - commands_to_keep_in_history))
        sed -i "$lines_to_keep,\$d" "$history_file"
    else
        echo "$history_file not found."
    fi
}

find "$logs_dir" -type f -mmin +$minutes_to_keep_logs -exec bash -c 'total_lines=$(wc -l < "$1"); lines_to_keep=$((total_lines - commands_to_keep_in_history)); sed -i "1,${lines_to_keep}d" "$1"' _ {} \;

delete_last_commands "$HOME/.bash_history"
delete_last_commands "$HOME/.ash_history"
delete_last_commands "$HOME/.zsh_history"