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This will probably kill any user sessions and/or ssh connections to other servers you might have active.
Ever since the switch to pulseaudio, Ubuntu users including myself have found themselves with no sound intermittently. To fix this, just use this command and restarts firefox or mplayer or whatever.
NOTE: When opening the files you might need to strip the very top line with notepad++ as its a mistake header
This is useful when the local machine where you need to do the packet capture with tcpdump doesn?t have enough room to save the file, where as your remote host does
tcpdump -i eth0 -w - | ssh forge.remotehost.com -c arcfour,blowfish-cbc -C -p 50005 "cat - | gzip > /tmp/eth0.pcap.gz"
Your @ PC1 doing a tcpdump of PC1s eth0 interface and its going to save the output @ PC2 who is called save.location.com to a file /tmp/eth0-to-me.pcap.gz again on PC2
More info @: http://www.kossboss.com/linuxtcpdump1
This is a command to be used inside of MS-DOS batch files to check existence of commands as preconditions before actual batch processing can be started. If the command is found, batch script continues execution. If not, a message is printed on screen, script then waits for user pressing a key and exits.
An error message of the command itself is suppressed for clarity purpose.
Say you just typed a long command like this:
$ rsync -navupogz --delete /long/path/to/dir_a /very/long/path/to/dir_b
but you really want to sync dir_b to dir_a. Instead of rewriting all the command line, just type followed by , and your command line will read
$ rsync -navupogz --delete /very/long/path/to/dir_b /long/path/to/dir_a
Also look at xload
The `-q' arg forces tail to not output the name of the current file
This is helpful for shell scripts, I use it in my custom php install script to schedule to delete the build files in 3 hours, as the php install script is completely automated and is made to run slow.
Does require at, which some environments without crontab still do have.
You can add as many commands to the at you want. Here's how I delete them in case the script gets killed. (trapped)
atq |awk '{print $1}'|xargs -iJ atrm J &>/dev/null
The correct way to restart openssh-server on your synology nas.
This is what I came up to generate XKCD #936 style four-word password.
Since first letter of every word is capitalized it looks a bit more readable to my eyes.
Also strips single quotes.
And yes - regex is a bit of a kludge, but that's the bes i could think of.
