Check These Out
For example we need find fast where located and described keyword COMMIT_EDITMSG in man files. Here example howto solve it by search with command bzgrep in man files. Generally these files in bz compressed format. You can use another keywords to your search. Common syntax is:
bzgrep -lE keyword1 /usr/share/man/man?/optional-keyword-to-refine*
or
bzgrep -lE keyword1 /usr/share/man/man?/*
where optional-keyword-to-refine is optional and may be omitted but used to speedup search
Of course you may combine other options for bzgrep (its based on grep)
This command will bypass checking the host key of the target server against the local known_hosts file.
When you SSH to a server whose host key does not match the one stored in your local machine's known_hosts file, you'll get a error like " WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" that indicates a key mismatch. If you know the key has legitimately changed (like the server was reinstalled), a permanent solution is to remove the stored key for that server in known_hosts.
However, there are some occasions where you may not want to make the permanent change. For example, you've done some port-forwarding trickery with ssh -R or ssh -L, and are doing ssh user@localhost to connect over the port-forwarding to some other machine (not actually your localhost). Since this is usually temporary, you probably don't want to change the known_hosts file. This command is useful for those situations.
Credit: Command found at http://linuxcommando.blogspot.com/2008/10/how-to-disable-ssh-host-key-checking.html. Further discussion of how it works is there also.
Note this is a bit different than command #5307 - with that one you will still be prompted to store the unrecognized key, whereas this one won't prompt you for the key at all.
Draw a telephone keyboard, using just a shell built-in command.
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"
This command could seem pretty pointless especially when you can get the same result more easily using the rpm builtin queryformat, like:
$ rpm -qa --qf "%{NAME} %{VERSION} %{RELEASE}.%{ARCH}\n" | sort | column -t
but nonetheless I've learned that sometimes it can be quite interesting trying to explore alternative ways to accomplish the same task (as Perl folks like to say: There's more than one way to do it!)
This will view the console and assumes the screen is 80 characters wide.
Use /dev/vcs2 for the next virtual console.. etc.
This also works with Safari if you just change the application name. Replace
$ window 1
with
$ windows
to list the URLs of tabs in all windows instead of only the frontmost window. This also includes titles:
$ osascript -e{'set o to""','tell app"google chrome"','repeat with t in tabs of window 1','set o to o&url of t&"\n"&" "&title of t&"\n"',end,end}|sed \$d
.
