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Re^2: substitute 4 spaces instead of a tab

by anneli (Pilgrim)
on Nov 07, 2011 at 10:40 UTC ( #936471=note: print w/ replies, xml ) Need Help??

in reply to Re: substitute 4 spaces instead of a tab
in thread substitute 4 spaces instead of a tab

With regards to not truncating anything accidentally, davido mentioned this excellent suggestion: move the original file out of the way first (e.g. if it's called shock_api.h, call it shock_api.h.bak or similar; there's a built-in called rename to do this), then read in from shock_api.h.bak and write out to shock_api.h.

This solves the simultaneous read/write truncation issue, and creates a backup for you in case things go awry.

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Re^3: substitute 4 spaces instead of a tab
by davido (Archbishop) on Nov 07, 2011 at 16:53 UTC

    In fact my suggestion isn't exactly original either. Take a look at perlrun under the -i flag. When you instruct Perl do to in-place edits from the command line like this, "perl -i.bak ....." you get essentially the same behavior.


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