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author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2020-11-10 16:34:29 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-11-13 08:53:40 +0100 |
commit | 4fd3686373e842ac3e43b53ca5280b38e5a3d96b (patch) | |
tree | 05de1fe191d1fbf7f85d155a26541ea04dd28094 /include | |
parent | d0f535b6a60a32683336b834837840615d0891f8 (diff) | |
download | barebox-4fd3686373e842ac3e43b53ca5280b38e5a3d96b.tar.gz barebox-4fd3686373e842ac3e43b53ca5280b38e5a3d96b.tar.xz |
doc: add note about characters like hyphens in variable names
The mismatch between the allowed characters in shell variables and
device parameters is a common pitfall, especially because device
tree node names often have hyphens in them, which is disallowed by
hush.
While such variables can be read by the ${variable-example}, setting
them is only possible with the setenv command. Reflect this in the
documentation.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
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