November 1999
Intermediate to advanced
832 pages
19h 28m
English
Content preview from Practical Programming in Tcl & Tk, Third Edition
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Predefined Variables
| argc | The number of command-line arguments. |
| argv | A list of the command-line arguments. |
| argv0 | The name of the script being executed. If being used interactively, argv0 is the name of the shell program. |
| embed_args | The list of arguments in the <EMBED> tag. Tcl applets only. See page 298. |
| env | An array of the environment variables. See page 117. |
| tcl_interactive | True (one) if the tclsh is prompting for commands. |
| tcl_library | The script library directory. |
| tcl_patchLevel | Modified version number, e.g., 8.0b1. |
| tcl_platform | Array containing operating system information. See page 182. |
| tcl_prompt1 | If defined, this is a command that outputs the prompt. |
| tcl_prompt2 | If defined, this is a command that outputs the prompt ... |
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