On the beginning of Configure perl program, there is a statment as follows:
:
eval 'exec perl -S $0 ${1+"$@"}'
if $running_under_some_shell;
##
## Configure -- OpenSSL source tree configuration script
##
Could someone help to explain? I can not find the means of the symbol
":" at the beginning of perl program and the variable
$running_under_some_shell.
Regards,
Guopei Qiao
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