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37 lines
716 B
Markdown
37 lines
716 B
Markdown
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# {
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> Multifunctionele shell-syntax.
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> Meer informatie: <https://www.gnu.org/software/bash/manual/bash.html>.
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- Isoleer variabele namen:
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`echo ${HOME}work`
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- Breid reeksen uit:
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`echo {1..3} {a..c}{dir1,dir2,dir3}`
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- Controleer of `variable` is ingesteld voordat tekst wordt geretourneerd:
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`echo ${variable:+variable is set and contains $variable}`
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- Stel standaardwaarden in als `variable` niet is ingesteld:
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`echo ${variable:-default}`
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- Geef de lengte van `variable` in tekens:
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`echo ${#variable}`
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- Geef een sliced string terug:
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`echo ${variable:3:7}`
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- Breid een `variable` recursief uit:
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`echo ${!variable}`
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- Groepeer commando uitvoer:
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`{ {{commando1; commando2; ...}} } | {{ander_commando}}`
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