Check tcp-wrapping support

supportsWrap(){ ldd `which ${1}` | grep "libwrap" &>/dev/null && return 0 || return 1; }
This function returns TRUE if the application supports tcp-wrapping or FALSE if not by reading the shared libraries used by this application.
Sample Output
if supportsWrap sshd ;then  vim + -o /etc/hosts.allow /etc/hosts.deny; fi

1
By: cicatriz
2010-12-01 15:22:29

What Others Think

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seofox · 147 weeks and 5 days ago
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pugpuppies95 · 72 weeks ago

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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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