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Am Fri, Jan 14, 2022 at 02:38:22PM +0000 schrieb russian sky: |
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> > I don’t quite follow. Do you mean the “.*”, so you replace .* with .? |
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> Yes. Based on the explanation of '*' in the gawk manual, it's |
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> used to match zero/one/more times repeating of the preceding character which in turn doesn't match the default |
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> diff printing mode( >for removing, <for adding). |
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Why would it not match? . means “any character”. |
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> It's not necessary to add '*' to '/^>.*(=|Linux)/'. |
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I think it is. |
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“.*” basically means “any string of any length, including 0. “.” means |
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“exactly one character”. |
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So your original pattern will match '>somestuff=', '> a=', and even |
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'>Linux'. But without the *, it will only match if there is that one |
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character between > and = or Linux. Acutally, diff adds a space after the >, |
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so your expression will only match lines starting with '> =' or with '> |
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Linux'. |
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I’d actually replace gawk with sed, because the output of your gawk command |
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leaves the space in. If an example output for diff is: |
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6,7c6 |
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< CONFIG_CC_IS_GCC=y |
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< CONFIG_GCC_VERSION=110100 |
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--- |
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> CONFIG_CC_IS_GCC=n |
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Then your line returns: |
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CONFIG_CC_IS_GCC=n |
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If you use `sed -n 's/^> //p'` instead, the output will become: |
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CONFIG_CC_IS_GCC=n |
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-- |
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Grüße | Greetings | Qapla’ |
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Please do not share anything from, with or about me on any social network. |
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If I had a thousand tongues, you would all be to my taste. |
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