String length: Difference between revisions
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m (→{{header|UNIX Shell}}: Add note about bytes vs characters in implementations) |
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=={{header|UNIX Shell}}== |
=={{header|UNIX Shell}}== |
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===Byte |
====Byte length via external utility:==== |
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====With external utility:==== |
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{{works with|Bourne Shell}} |
{{works with|Bourne Shell}} |
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====With [[Unix|SUSv3]] parameter expansion modifier:==== |
====With [[Unix|SUSv3]] parameter expansion modifier:==== |
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This returns the byte count in ash/dash, but the character count in bash, ksh, and zsh: |
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{{works with|Almquist SHell}} |
{{works with|Almquist SHell}} |
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{{works with|Bourne Again SHell |
{{works with|Bourne Again SHell}} |
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{{works with| |
{{works with|Korn Shell|93}} |
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{{works with|Z SHell}} |
{{works with|Z SHell}} |
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<syntaxhighlight lang="bash">string='Hello, world!' |
<syntaxhighlight lang="bash">string='Hello, world!' |
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length= |
length=${#string} |
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echo $length # if you want it printed to the terminal</syntaxhighlight> |
echo $length # if you want it printed to the terminal</syntaxhighlight> |
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