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Annotation of 42BSD/usr.lib/learn/morefiles/L5.1c, revision 1.1.1.1

1.1       root        1: #print
                      2: Another use for pipes is to replace a command sequence that we
                      3: did earlier with "cat", "pr" and a temporary file.  If you have
                      4: a bunch of small files, using "pr" on them directly wastes
                      5: paper, since each file takes a page.  You could say
                      6:   cat memo* >temp
                      7:   pr temp
                      8:   rm temp
                      9: but this is a nuisance (and the output will
                     10: have the title "temp" on each page).  So use
                     11: a pipe instead.
                     12: In this directory there are some files whose
                     13: names begin with "word".  Use "cat", "pr" and a pipe
                     14: to print them, then type "ready".
                     15: #create word1
                     16: now
                     17: is
                     18: the
                     19: time
                     20: for
                     21: all
                     22: #create word2
                     23: good
                     24: men
                     25: to
                     26: come
                     27: to
                     28: the
                     29: aid
                     30: #create word3
                     31: of
                     32: their
                     33: party.
                     34: #copyin
                     35: #user
                     36: #uncopyin
                     37: grep 'cat word.*| *pr' <.copy >/dev/null
                     38: #log
                     39: #next
                     40: 5.1d 10

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