nix3-store-cat(1) General Commands Manual nix3-store-cat(1)

Warning
This program is experimental and its interface is subject to change.

nix store cat - print the contents of a file in the Nix store on stdout

nix store cat [option…] path

•
Show the contents of a file in a binary cache:
# nix store cat --store https://cache.nixos.org/ \
  /nix/store/0i2jd68mp5g6h2sa5k9c85rb80sn8hi9-hello-2.10/bin/hello | hexdump -C | head -n1
00000000  7f 45 4c 46 02 01 01 00  00 00 00 00 00 00 00 00  |.ELF............|

This command prints on standard output the contents of the regular file path in a Nix store. path can be a top-level store path or any file inside a store path.

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--debug
Set the logging verbosity level to ‘debug’.
•
--log-format format
Set the format of log output; one of raw, internal-json, bar or bar-with-logs.
•
--print-build-logs / -L
Print full build logs on standard error.
•
--quiet
Decrease the logging verbosity level.
•
--verbose / -v
Increase the logging verbosity level.

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--help
Show usage information.
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--offline
Disable substituters and consider all previously downloaded files up-to-date.
•
--option name value
Set the Nix configuration setting name to value (overriding nix.conf).
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--refresh
Consider all previously downloaded files out-of-date.
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--version
Show version information.

Note

See man nix.conf for overriding configuration settings with command line flags.