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coreutils: Conditions

 
 16 Conditions
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 This section describes commands that are primarily useful for their exit
 status, rather than their output.  Thus, they are often used as the
 condition of shell ‘if’ statements, or as the last command in a
 pipeline.
 

Menu

 
· false invocation            Do nothing, unsuccessfully.
· true invocation             Do nothing, successfully.
· test invocation             Check file types and compare values.
· expr invocation             Evaluate expressions.
 

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