Reading last whole word from variable

Question

I am currently making a script that manipulates several files, and I am trying to read the last whole word from a variable ($pio).

The string is variable in length and word count and is set to $pio in the start of the function.

I have tried to read the last word in the line/variable separated by a whitespace with "strip" but this far I have only been able to read by character count.

Is it possible to read the whole last word of the string and parse it into a new variable?

score 3 · Accepted Answer · answered Apr 05 '14 at 12:11

3

You can split the string and then take the last index:

set lastWord [lindex [split $pio] end]

Or if you don't mind using a little regexp, you can use something like this:

regexp -- {\S+$} $pio lastWord

\S+ is an expression to match at least 1 non-space character, and $ makes sure that this match occurs at the end of the string. The match will be stored a variable named lastWord.

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answered Apr 05 '14 at 12:11

Jerry

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Probably a good idea to `string trim` before the `split` or `regexp`. – Donal Fellows Apr 05 '14 at 12:50
Didn't consider that, but that's true. With user input, we can never be too sure! – Jerry Apr 05 '14 at 12:54

Reading last whole word from variable

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