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if:tldr:f5f92
if: Execute the specified commands if the condition command's exit status is zero.
$ if ${condition_command}; then ${echo "Condition is true"}; fi
try on your machine
This command is meant to evaluate a condition and perform an action if the condition is true.
Here's a breakdown of the command:
if
: This keyword marks the beginning of the conditional statement.${condition_command}
: This is where the condition is evaluated.condition_command
can be any valid command or expression that results in a boolean (true/false) value. Typically, this would be something like checking if a variable is set, comparing two values, or executing a test command.then
: This keyword marks the beginning of the action block, which contains the code to be executed if the condition is true.${echo "Condition is true"}
: This is the action that will be performed if the condition evaluates to true. In this example, it's theecho
command with a string as an argument.fi
: This keyword marks the end of the conditional statement.
In summary, if the ${condition_command}
evaluates to true, the code within the action block (in this case, echo "Condition is true"
) will be executed. Otherwise, it will be skipped.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.