Another of my subjects this semester at uni, had me using a bit of awk and sed this week just gone, and I must say, that I now do have a more understanding knowledge of both of these tools.
Before I did understand how to do rather small things with each (like change instances of words, to another word, and pull out every 4th word from a sentence to use elsewhere), I never did try and go any more into either of them.
As you can see from the following code snippets, I think I have dug a bit more into these tools.
[HTML_REMOVED]sed:[HTML_REMOVED] Change the order, of the first two parameters called by a function
[HTML_REMOVED]s/somefunc((.),(.)(,.*))/somefunc(2,13)/g[HTML_REMOVED]
[HTML_REMOVED]awk:[HTML_REMOVED] add line numbers to each line of a source file, without skipping numbers. Comments should not be numbered.
[HTML_REMOVED]
{ if ($1 ~////) { printf("%5st%sn", "", $0); next } }
{ if ($1 ~//*/) { z = 1; printf("%5st%sn", "", $0); next } }
{ if ($1 ~/*//) { z = 0; printf("%5st%sn", "", $0); next } }
{ if (z > 0) { printf("%5st%sn", "", $0); next } }
{ printf("%5st%sn", (NF? ++a ":" :""), $0) }
[HTML_REMOVED]
A sample output for this awk script would be:
[HTML_REMOVED]
1: #include [HTML_REMOVED]
// main routine
2: int main(int argc, char argv[])
3: {
/ Incredibly complex function here --
* it prints hello world
*/
4: printf("%s", "Hello, world");
5: return 0; // return zero!
6: }
[HTML_REMOVED]
And comparing what I did, to some other features of these tools, this is still only the beginning of their abilities.
