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GNU ed + GNU readline
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#!/bin/sh | |
# Try to add GNU readline support to GNU ed | |
hash rlwrap 2>&- | |
if (( $? == 0 )); then | |
exec /usr/bin/rlwrap /bin/ed "$@" | |
else | |
exec /bin/ed "$@" | |
fi |
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The
&-
itself is not the/dev/null
; it means to close the stream with such number (if I remember correctly). If you're worring about that why not just2>/dev/null
?