“On Unix, command shells have tried to do for Unix what DCL did
for VMS, but with only partial success. Where they leave off, a
variety of scripting languages have jumped in…”
“The awk language was originally developed at AT&T Bell
labs…” Linux and other open source flavors of Unix include a
clone of AT&T’s awk, GNU awk (gawk) by Paul Rubin and Jay
Fenlason of the Free Software Foundation…”
“At first glance, Tcl (often pronounced “tickle”) looks a lot
like C, but the more you use it the less C-like it becomes…”
“The Practical Extraction and Reporting Language (Perl) started
out as a successor to awk… Perl’s forte is still text processing,
but it has evolved in to a general purpose language…”
“Guido van Rossum’s Python language was, from the beginning,
designed as a glue and general-purpose language…”