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Published: Jan 20, 2018 License: BSD-3-Clause Imports: 11 Imported by: 0



Pack is a simple version of the traditional Unix ar tool. It implements only the operations needed by Go.


go tool pack op file.a [name...]

Pack applies the operation to the archive, using the names as arguments to the operation.

The operation op is given by one of these letters:

c	append files (from the file system) to a new archive
p	print files from the archive
r	append files (from the file system) to the archive
t	list files from the archive
x	extract files from the archive

The archive argument to the c command must be non-existent or a valid archive file, which will be cleared before adding new entries. It is an error if the file exists but is not an archive.

For the p, t, and x commands, listing no names on the command line causes the operation to apply to all files in the archive.

In contrast to Unix ar, the r operation always appends to the archive, even if a file with the given name already exists in the archive. In this way pack's r operation is more like Unix ar's rq operation.

Adding the letter v to an operation, as in pv or rv, enables verbose operation: For the c and r commands, names are printed as files are added. For the p command, each file is prefixed by the name on a line by itself. For the t command, the listing includes additional file metadata. For the x command, names are printed as files are extracted.

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