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How to Run `mv` Commands with Wildcards in Go?

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2024-12-14 20:48:13180browse

How to Run `mv` Commands with Wildcards in Go?

Running MV Commands with Wildcards in Go

In Go, the exec package enables the execution of external commands. However, when attempting to execute an mv command with a wildcard using exec.Command, an error stating "No such file or directory" may arise.

The reason for this error is that when a user enters a command containing a wildcard, such as "mv ./source-dir/*", the shell expands the wildcard to a list of matching files. However, in Go, the exec.Command function simply passes the string containing the wildcard as an argument to the command, rather than expanding it.

To resolve this issue, one can either manually expand the wildcard by using the filepath.Glob function, which returns a slice of matching file paths. Alternatively, one can invoke the shell to perform the expansion. This can be achieved by using the exec.Command function with "/bin/sh" as the first argument, followed by "-c" and the command string with the wildcard, such as:

cmd := exec.Command("/bin/sh", "-c", "mv ./source-dir/* ./dest-dir")

By leveraging this method, the shell will handle the expansion of the wildcard, allowing the mv command to execute successfully.

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