Splitting horizontal to verical...lines
 

HI i have a file like this ...

"Inter","Hyd bad","General ",,"http://nal.html",
"Inter","HYd bad","ca ",,"http://ca.html",
"Inter","Hyd bad","cas ",,"http:cass.html",

there are 1000 lines like this .
i want to make every horizantal line into vertical line.
then the output should be
"Inter",
"Hyd bad",
"General ",
"http://nal.html",
....

plz help me...give the bash script for the following

To change the double comma to a single:
sed 's/,,/,/g'

to replace all the commas with linefeeds:
sed 's/,/\n/g'

Pipe these together (after cat filename), and you'll get the "vertical list" with one blank line after each set.

To remove the last comma so this does not happen:
sed 's/,$//g'

Thks pixellany and ghostdog74 , it is working perfectly

sed is for stream editing. awk is overkill too. Just use "tr". It takes care of transliteration, prevent double linefeeds, etc.

should suffice. Simple, no?

If you just want to do one task, use the first tool that works. If you want to learn programming, try ALL of the tools
Doesn't that put two linefeeds whereever there is the double comma?

@pixellany: no it doesn't. The -s option squashes duplicates, triples, quadruples, etc. See "man tr".

for OP's case, it doesn't matter. sed/awk/tr whatever. They did the job.
by the way, the tr solution should be
also noticed that OP's sample output included the "," at the end, ie it is not tr'ed to "\n".