Friday, June 25, 2010
sed & awk
书的链接
【下载code example】
how to extract the file type tar.Z?
-bash-3.00$ ltr
total 76
-rw-r--r-- 1 liangzho liangzho 71525 Jun 25 11:11 progs.tar.Z
-bash-3.00$ tar xzf progs.tar.Z
-bash-3.00$ ltr
total 80
drwxr-xr-x 5 liangzho liangzho 4096 Nov 25 1992 awkprogs
-rw-r--r-- 1 liangzho liangzho 71525 Jun 25 11:11 progs.tar.Z
Sed, so called because it is a stream editor, is perfect for applying a series of edits to a number of files. Awk, named after its developers Aho, Weinberger, and Kernighan, is a programming language that permits easy manipulation of structured data and the generation of formatted reports.
【下载code example】
how to extract the file type tar.Z?
-bash-3.00$ ltr
total 76
-rw-r--r-- 1 liangzho liangzho 71525 Jun 25 11:11 progs.tar.Z
-bash-3.00$ tar xzf progs.tar.Z
-bash-3.00$ ltr
total 80
drwxr-xr-x 5 liangzho liangzho 4096 Nov 25 1992 awkprogs
-rw-r--r-- 1 liangzho liangzho 71525 Jun 25 11:11 progs.tar.Z
Sed, so called because it is a stream editor, is perfect for applying a series of edits to a number of files. Awk, named after its developers Aho, Weinberger, and Kernighan, is a programming language that permits easy manipulation of structured data and the generation of formatted reports.
Tuesday, May 25, 2010
Xen
What's Xen
Xen is a piece of software that enables one machine to behave as if it were many virtual machines. Each of these machines can run its own operating system and exist almost independently of the other virtual machines running on the same hardware. Each virtual machine (an instance, or domain in Xen parlance) has its own apparent network interfaces, disks, and memory.
Xen is a piece of software that enables one machine to behave as if it were many virtual machines. Each of these machines can run its own operating system and exist almost independently of the other virtual machines running on the same hardware. Each virtual machine (an instance, or domain in Xen parlance) has its own apparent network interfaces, disks, and memory.
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