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expr: add link (#5608)

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marchersimon
2021-03-30 15:54:01 +02:00
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parent 703c11d569
commit 95846ed907
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pages/common/expr.md
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@@ -1,6 +1,7 @@
# expr
> Evaluate expressions and manipulate strings.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/expr-invocation.html>.
- Get string length: