Assume you do not have curl/telnet/netcat (or nc does not support -z as in later versions ?? why did they remove it ?? ) the following will work on any recent Bash version. (echo > /dev/tcp/skinner/22) >/dev/null 2>&1 && echo “Port is open” || echo “Port is closed” nJoy 😉
So you have a script on the local machine and you want to run it remotely and pass arguments to it : ssh user@remote ‘cat | bash /dev/stdin param1 param2 .. paramN’ < /usr/scripts/localscript.sh 😉 nJoy
aws iam update-user –user-name suse-dev –new-user-name sqs-dev nJoy 😉
tcpdump -s 0 -l -w – dst port 3306 | strings nJoy 😉
esxcli network ip neighbor list njoy 😉
sudo yum –enablerepo epel-testing install s3cmd njoy 😉
a=0; for i in `cat $FOLDERLIST` do ((a++)) percentage=`awk -v a=$a -v b=$NUMBEROFFOLDERS 'BEGIN {printf "%3.0f", a / b * 100; exit } '` arrow=`printf '=%.0s' $(seq 1 $percentage)` headed=`printf '%s%s' $arrow '>'` paddedarrow=`printf '%-102s' $headed` echo -ne "$paddedarrow $a/$NUMBEROFFOLDERS [$percentage] \r " done echo njoy  😉
In recent CentOS version 6.3 is an unresolved bug, which causes the network card to freeze the server. Following message appears in /var/log/messages kernel To work around the problem you will need to turn off Active-State Power Management (ASPM) (Feature that saves power in the Peripheral Component Interconnect Express (PCI Express or PCIe) subsystem by…
Setting up a listener in UDP : Install socat Jist here (Centos 6.6 : http://jist.sudoall.com/socat/setup install curl “http://jist.sudoall.com/socat/setup” | bash – socat -u udp-recv:8888 – To send the datagram : nc -u 127.0.0.1 8888 njoy 😉
The “magic SysRq key” provides a way to send commands directly to the kernel through the /proc filesystem. It is enabled via a kernel compile time option, CONFIG_MAGIC_SYSRQ, which seems to be standard on most distributions. First you must activate the magic SysRq option: echo 1 > /proc/sys/kernel/sysrq When you are ready to reboot the…
