2 files changed, 15 insertions(+), 13 deletions(-)

M basics/00/mkfile
M basics/00/mksolution

@@ 7,30 7,32 @@
 myfile:
 	echo 'I''m writing to a file!' >myfile
 
-# If the user on the command line typed in 'mk myfile', it make it!
+# If `mk myfile` is run on the command line, mk will make it.
+# Try it!
 # It does this by executing the recipe in rc, the command line shell.
 # The recipe can be anything, even multiple lines, as long as rc can interpret it.
-# If the user typed in 'mk myfile' again, it would return the file is up to date
+# If the user typed in `mk myfile` again, it would return the file is up to date
 #  and doesn't need to be made again.
 # Your turn! Specify a target file named 'myotherfile' and create it however you wish.
 
 
 
-# If you type in 'mk myotherfile', mk will detect that myotherfile is out of date
+# If you run `mk myotherfile`, mk will detect that myotherfile is out of date
 #  and run the recipe you wrote to create it.
 
 # You can also specify multiple files as the targets for the same recipe.
+# This is useful when a command generates multiple files, like yacc.
 
 file1 file2 file3:
-	echo 'my #1 file' >file1
-	echo 'my #2 file' >file2
-	echo 'my #3 file' >file3
+	echo 'my #1 file' | tee file1 \
+	| sed s/1/2/ | tee file2 \
+	| sed s/file/data/ > file3
 
-# (Note that there is a better way to write this recipe using Environment Variables.)
-# (More on that in a later exercise.)
-
-# Your turn! Write a target and recipe for 'file4' 'file5' and 'file6'.
+# Your turn! Write a target and recipe for 'file4 file5 file6'.
 
 
 
+# Run `mk myfile myotherfile file1 file2 file3 file4 file5 file6`
+#  to see that all files get made.
+# Check the mksolution file for ideas.
 # Onto the next exercise!

@@ 5,9 5,9 @@ myotherfile:
 	touch myotherfile
 
 file1 file2 file3:
-	echo 'my #1 file' >file1
-	echo 'my #2 file' >file2
-	echo 'my #3 file' >file3
+	echo 'my #1 file' | tee file1 \
+	| sed s/1/2/ | tee file2 \
+	| sed s/file/data/ > file3
 
 file4 file5 file6:
 	echo 'foo' >file4