Tcl commands by subject area

• Environment commands: cd, glob, pid, pwd.

• Flow of control commands: break, case, catch, continue, eval, exit, expr, for, foreach, if, proc, return, source, switch, trace, unknown, uplevel, while.

• Information commands: error, history, info, time.

• Input and output commands: close, eof, file, flush, gets, open, puts, read, seek, tell.

• List handling commands: concat, lappend, lindex, linsert, list, llength, lrange, lreplace, lsearch, lsort, set, split.

• Regular expression commands: regexp, regsub.

• Variable and array commands: append, array, format, global, join, scan, set, split, string, upvar.