if:tldr:1ab59

if: Check whether a [f]ile exists.

$ if [[ -f ${filename} ]]; then ${echo "Condition is true"}; fi

try on your machine

The given command is an example of an if statement in the Bash scripting language.

The if statement is used to execute certain commands conditionally based on the evaluation of an expression.
[[ -f ${filename} ]] is the expression being evaluated. The -f flag is used to check if filename refers to a regular file. If it does, the condition evaluates to true.
If the condition is true, then the subsequent command ${echo "Condition is true"} will be executed. Here, ${} is used to access the value of a variable. In this case, it is executing the echo command to display the message "Condition is true".
Finally, fi is used to indicate the end of the if statement.

In summary, if the variable filename refers to an existing regular file, the message "Condition is true" will be displayed.

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.

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