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# with `pacman --debug`
We can display the mirrors that pacman uses with the `--debug` option.
For example, when running `pacman --debug -Sy`, pacman will write lines like these to standard error:
debug: core.db: url is http://mirrors.kernel.org/archlinux/core/os/x86_64/core.db
We can use grep to filter the lines containing URLs:
pacman --debug -Sy |& grep "url is"
~~Which prints this, in my case:~~
debug: core.db: url is http://mirrors.kernel.org/archlinux/core/os/x86_64/core.db
debug: core.db.sig: url is http://mirrors.edge.kernel.org/archlinux/core/os/x86_64/core.db.sig
debug: extra.db: url is http://mirrors.kernel.org/archlinux/extra/os/x86_64/extra.db
debug: extra.db.sig: url is http://mirrors.edge.kernel.org/archlinux/extra/os/x86_64/extra.db.sig
debug: community.db: url is http://mirrors.kernel.org/archlinux/community/os/x86_64/community.db
debug: community.db.sig: url is http://mirrors.edge.kernel.org/archlinux/community/os/x86_64/community.db.sig
~~The [ampersand after the pipe](https://www.gnu.org/software/bash/manual/html_node/Pipelines.html) in the command above will also redirect the standard error stream to grep, not only standard out.~~

# with `pacman --debug`
We can display the mirrors that pacman uses with the `--debug` option.
For example, when running `pacman --debug -Sy`, pacman will write lines like these to standard error:
debug: core.db: url is http://mirrors.kernel.org/archlinux/core/os/x86_64/core.db
We can use grep to filter the lines containing URLs:
pacman --debug -Sy |& grep "url is"
Which had printed this, in my case:
debug: core.db: url is http://mirrors.kernel.org/archlinux/core/os/x86_64/core.db
debug: core.db.sig: url is http://mirrors.edge.kernel.org/archlinux/core/os/x86_64/core.db.sig
debug: extra.db: url is http://mirrors.kernel.org/archlinux/extra/os/x86_64/extra.db
debug: extra.db.sig: url is http://mirrors.edge.kernel.org/archlinux/extra/os/x86_64/extra.db.sig
debug: community.db: url is http://mirrors.kernel.org/archlinux/community/os/x86_64/community.db
debug: community.db.sig: url is http://mirrors.edge.kernel.org/archlinux/community/os/x86_64/community.db.sig
The [ampersand after the pipe](https://www.gnu.org/software/bash/manual/html_node/Pipelines.html) in the command above will also redirect the standard error stream to grep, not only standard out.
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