RSS Linux by Examples
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简介:we explain every gnu/linux command by examples
原站:http://linux.byexamples.com
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“Linux by Examples”的内容更新
累计:164 篇(自 2007-04-25 起)
更新:约3篇/月,最后更新167 天前
Linux by Examples
it always have a need for this simple operation.i wanna copy certain files to a destination, but i wanna preserved the sub directories structure, any cp option to set? for examples, i wanna copy my_project/cpp/hello.cc to your_project folder, but i want it to appear as your_project/cpp/hello.cc automatically. especially i wanna do it in a batch of file.... (167 天前)
Linux by Examples
do you have a large xml to analyze? to query for info? maybe you are using a xml viewer, a string search for that. but if your xml have a proper structure and you have understand enough for the structure, you may want to consider to use xpath.[q] what is xpath? xpath is a “language” for finding information in an xml document. something like sql, it h... (316 天前)
Linux by Examples
you may want to create a bash script that export some environment variable for your shell, but infect every execution of bash script is a unique session, where the variable export within it can’t be carry backward back to the bash shell.for example you have a env.sh which contains some environment variablesexport hello=helloexport hello2=worldand yo... (316 天前)
Linux by Examples
i can direct assign value to a variable in my bash shell why i still need the command ‘export’ ? what is the different between them? if you have doubts about this, please continue to read on it.lets do an experiment in a bash shell:$ hello=world$ export hello2=world2$ echo $hello $hello2world world2hey, it works exactly the same!not really exac... (316 天前)
Linux by Examples
sometime you may wish to create a bash script to do something based on a config file, what actually was in your mind? how to implement the config file for your bash script?first i think of using command ‘cut’, where i can create a list of tag=value, then uses ‘cut‘ to read out the tag and value. but that is so wrong, because i could just using comma... (316 天前)
Linux by Examples
you may already realized linux happened to appear at many places, such as web server, storage server, desktop, kiosk machine, mobile devices. yes, more and more devices running embedded linux. yeah, android is a modified version of linux kernel too!scarcity is still an issue, embedded linux can be very different to linux that hosted on desktop or high-e... (316 天前)
Linux by Examples
usually we start our virtual machine by clicking through the gui. if your guest machine is a server, it would be making more sense to be run as background process.well, my case, i have ‘gentoo’ installed in virtual box, which expose to outside world through ssh. i would like it to start as background process, how can i do that?virtual box allows you ... (316 天前)
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