LinuxCheck is a small bash script for information collection, useful for emergency response on Debian and Centos systems.


LinuxCheck [1] is a single script able to collect a large set of information:

  • CPU TOP10, memory TOP10
  • CPU usage
  • boot time
  • Hard disk space information
  • User information, passwd information
  • Environmental variable detection
  • Service list
  • System program changes (debsums -e and rpm -va)
  • Network traffic statistics
  • Network connection, listening port
  • Open port
  • Routing table information
  • Route forwarding
  • ARP
  • DNS Server
  • SSH login information
  • SSH login IP
  • iptables information
  • SSH key detection
  • SSH burst IP
  • Crontab detection
  • Crontab backdoor detection
  • Find common configuration files
  • Find common software
  • Audit history files
  • Querying HOSTS files
  • lsmod exception kernel module
  • Anomaly file detection (nc, tunnel, proxy common hacker tools)
  • Large file detection (some large files packaged)
  • Free space, hard disk mount
  • Open port
  • LD_PRELOAD detection
  • NIC promiscuous mode
  • Most used software
  • Change the file mtime in the last 7 days
  • Change the file ctime in the last 7 days
  • View SUID file
  • Find: hidden files
  • Find sensitive files (nc, nmap, tunnel)
  • alias
  • LSOF -L1
  • SSHD
  • Find bash bounce shell
  • php webshell scan
  • jsp webshell scan
  • asp / aspx webshell scan
  • Detection of mining process
  • rkhunter scan


First, install rkhunter and ag:

$ sudo apt purge silversearcher-ag rkhunter

or, on centos:

$ yum -y install the_silver_searcher rkhunter

Then, you can start the script directly from github:

bash -c "$(curl -sSL"