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31

Suckage

• What if you needed low-level operations and formatting text?

• Experienced practitioners knew the following strategy:

• Write the whole thing in shell

• But implenment some extra shell commands in C

• The very first shell has no file globbing:

      % ls -l *.c
      ls: cannot access *.c: No such file or directory

• So there was a glob command (in C) to do it:

      % glob *.c
      bar.c foo.c
      % ls -l `glob *.c`
      -rw-r--r-- 1 mjd  781 1974-02-24 18:24 bar.c
      -rw-r--r-- 1 mjd 1178 1974-02-24 18:24 foo.c

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Copyright © 2011 M. J. Dominus