Linux

Linux

Ubuntu

  • Login as root
    • sudo su

  • Check your machine
    • uname --help

Usage: uname [OPTION]... Print certain system information. With no OPTION, same as -s.

  • -a, --all print all information, in the following order,
    • except omit -p and -i if unknown:
  • -s, --kernel-name print the kernel name
  • -n, --nodename print the network node hostname
  • -r, --kernel-release print the kernel release
  • -v, --kernel-version print the kernel version
  • -m, --machine print the machine hardware name
  • -p, --processor print the processor type or "unknown"
  • -i, --hardware-platform print the hardware platform or "unknown"
  • -o, --operating-system print the operating system
  • --help display this help and exit
  • --version output version information and exit

  • Check ports in use:
    • netstat -antp

  • SendMail files
    • /etc/mail/sendmail.conf
    • /etc/cron.d/sendmail
    • /etc/mail/sendmail.mc

  • find / -name somefile
    • Looks for a file named "somefile" starting at the root directory (searching all directories including mounted filesystems). The `-name' option makes the search case sensitive. You can use the `-iname' option to find something regardless of case.