how to remove words between /* and */ in several lines of file
hi,
I want to remove comments in somany files. coments started from /* and ends with */. so i wnt to remove words /* to */
how to remove words between /* and */ in several lines of file
EX :
cat haha.txt "HI",/*hk*/ob1,raju,/*hjh*/boju,beeju
output should be : "HI",ob1,raju,boju,beeju
I tried ur code in my machine. Its working fine . But i couldnt understand how it works. Im very new to shell scripting.. even i tried with tutorials.....
Please explain me
1. s@/\*[^/\*]*\*/@@g why [^/\*] this is required?
2. how it checks for multiple lines... becaz i saw in one of the tutorial...label is required to check multiple lines ...
This removes comments on one line. '[^/\*]' needs to find all symbols, but '/' '*' to the closing comment. Actually, I've missed that in comments could be symbols '/' and '*'. It won't work in this circumstances. '[^/\*]' should be removed...
Code:
\@/\*@{
This line matches opening comment and start section, which is applied to all line, containing '/*' symbols.
Code:
N
This command reads next line and puts it in pattern space.
Code:
s@ *\n@
This line is not necessary here
Code:
@ s@/\*[^/\*]*\*/@@g}
This substitutes all symbols between '/*' and '*/' to ''.
And it doesn't need label to check two lines. For checking in more than two it needs.
So, final script should looks like this
Code:
s@/\*.*\*/@@g
\@/\*@{
N
s@/\*.*\*/@@g
}
And finally, try to find book Sed & Awk - it explains all sed stuff
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