Commit | Line | Data |
---|---|---|
fd15fd37 BJ |
1 | |
2 | On the right side of a substitute, none of the other | |
3 | special characters mean anything unusual. Thus, if you wanted to | |
4 | replace the letter 'a' by an asterisk, for example, the obvious | |
5 | com and would work: | |
6 | ||
7 | s/a/*/p | |
8 | ||
9 | Try, in the file "data", replacing the comma on the last line | |
10 | with a period. Then rewrite the file and type "ready". | |
11 | #create Ref | |
12 | Square Roots | |
13 | 1.00 1.00 | |
14 | 2.00 1.42 | |
15 | 3.00 1.73 | |
16 | 4.00 2.00 | |
17 | You really shouldn't be | |
18 | printing all of this file - | |
19 | did you forget that '$' is | |
20 | the address of the last | |
21 | line of a file? | |
22 | Use that instead of printing everything. | |
23 | 5.00 2.23 | |
24 | 6.00 2.45 | |
25 | 7.00 2.65 | |
26 | 8.00 2.83 | |
27 | #create data | |
28 | Square Roots | |
29 | 1.00 1.00 | |
30 | 2.00 1.42 | |
31 | 3.00 1.73 | |
32 | 4.00 2.00 | |
33 | You really shouldn't be | |
34 | printing all of this file - | |
35 | did you forget that '$' is | |
36 | the address of the last | |
37 | line of a file? | |
38 | Use that instead of printing everything. | |
39 | 5.00 2.23 | |
40 | 6.00 2.45 | |
41 | 7.00 2.65 | |
42 | 8.00 2,83 | |
43 | #user | |
44 | #cmp data Ref | |
45 | #log | |
46 | #next | |
47 | 36.2d 5 |