Use POSIX LOGNAME environment variable
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@ -171,6 +171,7 @@ hostname="$HOSTNAME"
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# ensure $HOME is set
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[ -z "$HOME" ] && HOME=~
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# ensure $USER is set
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[ -z "$USER" ] && USER="$LOGNAME"
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[ -z "$USER" ] && USER="$(command whoami 2> /dev/null)"
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leading_data=""
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