How do I permanently change to LC_NUMERIC to en_US ?

I do not really want locale LC_NUMERIC en_AT. It messes up my SciLab command line.
How do I permanently change to  LC_NUMERIC to en_US ?

echo 'export LC_NUMERIC="en_US.UTF-8"' >>~/.bashrc

does not do it for me.....
Heinz

 build-aux/install-sh -c -d '/opt/sw.build/root-gnupg2-2.2.26-1/opt/sw/share/doc/gnupg'
Warning: Failed to set locale category LC_NUMERIC to en_AT.
Warning: Failed to set locale category LC_TIME to en_AT.
Warning: Failed to set locale category LC_COLLATE to en_AT.
Warning: Failed to set locale category LC_MONETARY to en_AT.
Warning: Failed to set locale category LC_NUMERIC to en_AT.
Warning: Failed to set locale category LC_TIME to en_AT.
Warning: Failed to set locale category LC_MESSAGES to en_AT.
Warning: Failed to set locale category LC_COLLATE to en_AT.
Warning: Failed to set locale category LC_MONETARY to en_AT.
Warning: Failed to set locale category LC_MESSAGES to en_AT.

BTW, beautiful new installations in   System Version:	macOS 10.15.7 (19H114),   Kernel Version:	Darwin 19.6.0
fink --version
Package manager version: 0.45.99.git
Distribution version: selfupdate-rsync Mon Dec 28 00:09:26 2020, 10.15, x86_64

Updating the list of locally available binary packages.
Scanning dists/stable/main/binary-darwin-x86_64
New package: dists/stable/main/binary-darwin-x86_64/crypto/libhogweed5-shlibs_3.5.1-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/gnupg2_2.2.26-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/nettle7-bin_3.5.1-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/gnutls30_3.6.13-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/gnutls30-shlibs_3.6.13-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/nettle7-shlibs_3.5.1-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/nettle7_3.5.1-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/libtasn1-6-shlibs_4.15.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/crypto/libtasn1-6-dev_4.15.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/net/curl_7.74.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/net/libcurl4-shlibs_7.74.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/net/librtmp1-shlibs_2.4-20190330-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/net/libcurl4_7.74.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/net/rtmpdump_2.4-20190330-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/net/librtmp1_2.4-20190330-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/editors/autogen-shlibs_5.18.14-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/editors/autogen_5.18.14-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/editors/xml2ag_5.18.14-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/editors/autogen-dev_5.18.14-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/sci/xephem_3.7.7-2_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/languages/guile20-doc_2.0.14-3_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/languages/guile20-libs_2.0.14-3_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/languages/guile20-shlibs_2.0.14-3_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/languages/guile20-dev_2.0.14-3_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/languages/guile20_2.0.14-3_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/libs/gmp5-shlibs_6.1.2-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/libs/libgmpxx5-shlibs_6.1.2-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/libs/gc_7.6.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/libs/gmp5_6.1.2-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/libs/gc-shlibs_7.6.0-1_darwin-x86_64.deb
New package: dists/stable/main/binary-darwin-x86_64/libs/perlmods/extutils-makemaker-pm5184_7.58-1_darwin-x86_64.deb

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