vip 3 . The WebSphere Application Server Performance Cookbook covers performance tuning for WebSphere Application Server, although there is also a very strong focus on Java. Managed to get it to work. use the keygen from the earlier release with the latest installer. SecurityStudy. Jai une fille qui est en couple depuis 1 an qui est amoureuse de moi, une SM qui est amoureuse de moi, je suis amoureux dune autre fille mais je suis timide, quest. Command line tricks for smart geeks. Everyone knows the answer to the question of life, the universe and everything is 4. It is this how many command line tricks must a man memorise You see, graphical user interfaces are all well and good, but when you want to get real work done its time to switch to the terminal. And so, we squeezed our brain cells, dug through dusty piles of old issues of Linux Format, and sat reflecting quietly over many a pint of ale, all with the goal of bringing you this 4. Weve tried to include a few that are easier for our, er, less experienced readers to enjoy, but we think even the most hardened Linux veteran will learn something new over the next 1. So, strap yourself in and get ready for command line heaven its time to kick ass and chew bubble gum, and were all out of gum. PS if youre looking for general Linux tips, check out our previous two articles Linux tips every geek should know and More Linux tips every geek should know. We also have an article with more Bash tips for power users if youre eager to the neighbourhood Bash wizard, and an excellent guide to mastering the Linux command line. Make your own Bash wormholes. Even for the Bash aficionado, the mkfifo command is likely to be one of the lesser used in your collection. It creates a pipe for sharing data, connecting two running utilities with a kind of command line wormhole. Data sent into one end will instantaneously appear at the other. Before we look at how to use it, its worth going over how we typically see pipes. If youve used the shell for anything other than scaring your friends with cat devrandom, youll be used to the idea of pipes. Theyre most often used to stream the output of one program into the input of another. A common use is when there is too much textual output from one command to read. Piping this output into another usually either less or more lets you pause and page through the output in your own time. In this instance, the pipe is temporarily created for the execution of a single command, but using mkfifo its possible to create persistent pipes that you can use for similar tasks. The fifo part of the command refers to the nature of the pipe the data thats first in is first out. Creating the pipe itself is as easy as typing mkfifo, followed by the name you wish to call it. Its also possible to set the permissions for the pipe using the mode parameter so you can restrict access. Once the pipe is created, you just need to route data into it. Heres a brief example. First we create the pipe, and use tail f to output any data thats sent to it. The next step, usually from another console or user account if the permissions have been set, is to send data to the pipe. Typing echo This is a test fifopipe will send the test message, which will itself be output by the tail command we attached to the pipe. Remote control MPlayer. There are two types of people in this world those who think MPlayer is the best media player in the history of existence, and those who are wrong. One of MPlayers lesser known features is the ability to control it from a console, a shell script or even over the network. The secret to this trick is in MPlayers slave option, which tells the program to accept commands from the stdin stream instead of keystrokes. Combine this with the input option, and commands are read from a file, or a FIFO. For instance, try this in one terminal. Then, in another terminal or from a script, enter. This command will pause the currently running MPlayer, and issuing the command again will resume playback. Note that you have to give the full path of the control file to MPlayer, with homeuser and so forth, because mplayer control alone wont work. There are plenty of other commands you can send to MPlayer indeed, any keyboard operation in the program triggers a command that you can use in your control script. You can even operate MPlayer from another computer on the network, using SSH or Netcat. See this example. Here, we log in to a remote machine host with the username user, and run a command to send pause to the remote machines MPlayer control file. Of course, this can be made much faster if you have SSH key authentication enabled, as you dont need to give the password each time. Share files the easy way. File sharing with Samba or NFS is easy once youve got it set up on both computers, but what if you just want to transfer a file to another computer on the network without the hassle of setting up software If the file is small, you may be able to email it. If the computers are in the same room, and USB devices are permitted on both, you can use a USB flash drive, but there is also another option. Woof is a Python script that will run on any Linux or similar computer. The name is an acronym for Web Offer One File, which sums it up fairly well, as it is a one hit web server. Theres nothing to install just download the script from the homepage at www. It will respond with a URL that can be typed into a web browser on another computer on the network no software beyond a browser is needed. Woof will serve the file to that computer and then exit you can use the c option to have it served more times. Woof can also serve a directory, like so. This will send a gzipped tarball of the directory, and you can replace z with j or u to get a bzipped or uncompressed tarball. If others like Woof and want to use it, you can even let them have a copy with. Find lost files. Have you ever saved a file, maybe a download, then been unable to find it Maybe you saved it in a different directory or with an unusual name. The find command comes in handy here. By default, find counts days from midnight, so an age of zero means today. You may have used the name option with find before, but it can do lots more. These options can be combined, so if that elusive download was an MP3 file, you could narrow the search with. The quotation marks are needed to stop the shell trying to expand the wildcard, and iname makes the match case insensitive. Incorrect permissions can cause obscure errors sometimes. You may, for example, have created a file in your home directory while working as root. To find files and directories that are not owned by you, use. USER. The shell sets the environment variable USER to the current username, and a You can even have find fix the permissions. USER exec sudo chown USER. The find man page explains the use of exec and many other possibilities. Bandwidth hogs. Have you ever noticed that your internet connection goes really slowly, even though youre not downloading anything Because of the way most asymmetric broadband connections are set up, if you saturate the upload bandwidth, downloads become almost impossible. This is because of the way the traffic is queued by the modem and the ISP. Even the slowest and lowest bandwidth operations, like using a remote shell or looking up a DNS address, become painfully slow or time out. If youre using something like a Bit. Torrent client to upload, you can limit the upload rate, which avoids this problem. Some other programs, like rsync, have a similar feature, but many do not. Also, running two such programs will still cause problems, if each has been told it can use 9. One solution is a handy script called Wonder Shaper, which uses the tc traffic control command to limit overall bandwidth usage to slightly below the maximum available. Get it from http lartc.