/etc/csh.login is in tcsh 6.20.00-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # /etc/csh.login: system-wide .login file for csh(1) and tcsh(1)
# allow for other packages/system admins to customize the shell environment
if (-e /etc/csh/login.d && `/bin/ls /etc/csh/login.d` != "") then
foreach FILE (`/bin/ls /etc/csh/login.d/*`)
source $FILE;
end;
endif
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