Telnet Unix Socket – How to Telnet to a Unix Socket in Debian to Test Memcached

memcachedtelnetunix-sockets

To test memcached on Ubuntu, I would run this command:

echo "stats settings" | nc -U /run/mydir/memcached.sock

However now I have changed to Debian, and Debian nc does not support the -U option.

I have tried ss, listen, telnet -b /run/mydir/memcached.sock with no joy.

What is the equivalent command in Debian?

Best Answer

Install the ncat or the netcat-openbsd package, both provides a version of nc supporting -U.

If you don't have nc, you can connect to a unix socket with socat like this:

socat - UNIX-CONNECT:/the/path/to/the/socket

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How to restore (xterm|gnome-terminal) wrapping after telnet to HP equipment has messed it up

In the specific case of the problem caused by HP switches, I found (by using script, which records every byte sent to the terminal), that the autowrap mode of the terminal was being turned off via the VT100 code "<ESC>[?7l" and then never being turned back on again. ^†

The VT100 code to turn autowrap back on is "<ESC>[?7h", which you could send to the terminal with this command:

printf "\033[?7h"

However, this assumes that your terminal is VT100-compliant, which, while a good bet, is not a certainty.^‡ The more correct way to do it is to rely on your terminfo settings and run this command:

tput smam

which generates the exact same output as the above printf command, assuming a VT100-style terminal. The terminfo capability "smam" is "Set Mode: Automatic Margins". Its partner is "rmam": "Reset Mode: Automatic Margins".

By the way, I really wish ssh had a "LocalEndCommand" config option (similar to "LocalCommand") so that I could just have it automatically run this un-fucker at the end of every HP switch ssh connection.

† Thanks, HP!

‡ Do you think HP made that bet or not? I'm guessing they did, and always send VT100 codes. In which case, if your terminal isn't VT100-compatible, you won't be having this problem to begin with.

Php – Cannot load Memcached in PHP on Gentoo

Your current situation is that memcache and memcached are correctly loaded on the command line from /etc/php/cli-php5.3/ext-active/ but are not loaded by Apache from /etc/php/apache2-php5.3/ext-active/.

Assuming that the CLI versions of these files are exactly the same as the Apache versions, it might be worth checking /etc/php/apache2-php5.3/php.ini to make sure it is correctly including the files in the extensions directory.

Run diffs on everything under /etc/php/cli-php5.3/ and /etc/php/apache2-php5.3/.

Best Answer

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How to restore (xterm|gnome-terminal) wrapping after telnet to HP equipment has messed it up

Php – Cannot load Memcached in PHP on Gentoo

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