Re: IFS File Update -- RPG400-L

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Ah, nice to know - you inspired me to search for "sed greegy" and it seems that sed IS greedy - so that people can use something, for example, like [^/]*to get everything up to the next forward slash - an example I saw used this when parsing a URL.

On 9/2/2014 2:50 PM, John Yeung wrote:

On Tue, Sep 2, 2014 at 12:28 PM, Vernon Hamberg
<vhamberg@xxxxxxxxxxxxxxx> wrote:

Here is an example using the qsh command -

qsh cmd('export QIBM_CCSID=1208 && sed "firstlinetosearh,lastlinetosearch
s/searchstring/replacestring/g" ifsfilepath > temp.tmp && mv temp.tmp
ifsfilepath')

The "g" right after "replacestring/" means greedy, IIRC - it makes sed
replace every instance of the search string.

Your understanding of what it does is correct, but 'g' here means
"global". The term "greedy" does apply to regular expressions, but in
the context of matching within a pattern. If you have the pattern

<td>.*</td>

for example, "greedy" means the .* will match as many characters as
possible. If your data is

<tr><td>4</td><td>5</td></tr>

then this pattern will match everything between the '<tr>' and the
'</tr>'. Most regex processors are greedy by default.

John Y.

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