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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 |
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 just 2>/dev/null?
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is &- equivalent to /dev/null ?