Irfan Sayed <irfan_sayed2...@yahoo.com> asked:
> I have perl script like this :
[...]
> open (VER1, "+>",
[...]
> while (<VER1>) {
[...]
> the issue is that , it is executing properly till while loop but it is
> not going inside the while and executing while loop.
> there is no any error and all the files are present in their location.
>From "perldoc perlopentut":
"It is possible to specify both read and write access. All you do is add a "+"
symbol in front of the redirection. But as in the shell, using a less-than on
a file never creates a new file; it only opens an existing one. On the other
hand, using a greater-than always clobbers (truncates to zero length) an
existing file, [...]".
I.e. use '+<' if you intend to read the old contents of the file before you
start writing to it.
HTH,
Thomas
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