TCL的特殊变量
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| Sr.No. | Special Variable & Description |
|---|---|
| 1 | argc Refers to a number of command-line arguments. |
| 2 | argv Refers to the list containing the command-line arguments. |
| 3 | argv0 Refers to the file name of the file being interpreted or the name by which we invoke the script. |
| 4 | env Used for representing the array of elements that are environmental variables. |
| 5 | errorCode Provides the error code for last Tcl error. |
| 6 | errorInfo Provides the stack trace for last Tcl error. |
| 7 | tcl_interactive Used to switch between interactive and non-interactive modes by setting |
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