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Its not clear what it does or what it contains. I tried greping the out put of set and env to see what C or LANG are set to in other places on the systems. Nothing was clear about how it is used or set. I don't even know what man page I should even start reading.
Any help here would be great as I try to decode the start up scripts on different Linux machines. If any one can recommend a good resources (books,documentation) that would help along this process That would be much appreciated.
Example of scripts using LANG=C on a centos6 machine
$ grep -i LANG=C ./* ./halt:LANG=C __umount_loop '$2 ~ /^\/$|^\/proc|^\/dev/{next} ./netconsole: route=$(LANG=C ip -o route get to $host/32) ./netconsole: arp=$(LANG=C /sbin/arping -c 1 -I $DEV $target 2>/dev/null | awk '/ reply from .*[.*]/ { print gensub(".* reply from .* \\[(.*)\\].*","\\1","G") }') ./netconsole: SYSLOGADDR=$(LANG=C host $SYSLOGADDR 2>/dev/null | awk '/has address / { print $NF }') ./network: LANG=C sed -e "$__sed_discard_ignored_files" \ ./network: LANG=C sort -k 1,1 -k 2n | \ ./network: LANG=C sed 's/ //') ./network: eval $(LANG=C fgrep "DEVICE=" ifcfg-$i) ./network: eval $(LANG=C fgrep "TYPE=" ifcfg-$i) ./network: eval $(LANG=C fgrep "SLAVE=" ifcfg-$i) ./network: if LANG=C egrep -L "^ONBOOT=['\"]?[Nn][Oo]['\"]?" ifcfg-$i > /dev/null ; then ./network: if ! LANG=C egrep -L "^ONBOOT=['\"]?[Nn][Oo]['\"]?" ifcfg-$i >/dev/null 2>&1 ; then ./network: eval $(LANG=C fgrep "DEVICE=" ifcfg-$i) ./network: eval $(LANG=C fgrep "TYPE=" ifcfg-$i) ./rpcbind:# We can't Japanese on normal console at boot time, so force LANG=C. ./rpcbind: LANG=C
Example useage in scripts on a ubuntu 10.04 machine
$ grep -i LANG=C ./* ./apache2:ENV="env -i LANG=C PATH=/usr/local/bin:/usr/bin:/bin" ./exim4:LANG=C ./ntop:export LANG=C\
As a word of caution, changing
LANG=C
in your.bashrc
(depending on your shell) will break some newer GUI console login behavior. It breaks CentOS 7.6, at least. (ask me how I know this) – Erik Bennett – 2019-03-26T14:20:56.100