if条件switchforeachwhilebreak/continue
proc定义局部/全局变量uplevel/upvar
string命令length/index/rangecompare/match/map
list/lindex/llengthlappend/linsertlreplace/lsort/lsearch
open/closegets/puts/read/write定位与缓冲区
catch/error/returntry/trap自定义错误
Tcllib介绍fileutil/csv/json/struct
puts调试trace/info命令TclPro Debugger