Ubuntu General
To display Ubuntu release use:
$ cat /etc/os-release
A simple way to create a core file:
$ ulimit -c unlimited $ sleep 10 & $ killall -SIGSEGV sleep
To convert a text file that contains ISO encoded characters (e.g. ISO-8859-9) to UTF8, use the following filter:
$ iconv -f ISO-8859-9 -t utf-8//translit
To do the reverse of it, use:
$ iconv -f utf-8 -t ISO-8859-9//translit
To list the contents of a binary file in hexadecimal and text, use the command:
$ hexdump -C binary_file