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When this variable is assigned a value, the history file is truncated, if necessary, to contain no more than that number of lines. Contains the name of a file in the same format as /etc/hosts that should be read when the shell needs to complete a hostname.
The maximum number of lines contained in the history file.
A colon-separated list of suffixes to ignore when performing filename completion (see READLINE below).
To see a list of all the environment variables currently defined; type 'set' at the prompt. The value of ENV is subjected to parameter expansion, command substitution, and arithmetic expansion before being interpreted as a pathname. ADDENDUM: How to use this License for your documents If this parameter is set when bash is executing a shell script, its value is interpreted as a filename containing commands to initialize the shell, as in .bashrc.If this variable is unset, the shell disables mail checking. A common value is ``/usr/gnu/bin:/usr/local/bin:/usr/ucb:/bin:/usr/bin:.''. The shell looks for commands and programs in a list of file paths stored in the PATH environment variable.A colon-separated list of pathnames to be checked for mail. An environment variable stores information in a place where other programs and commands can access it.