tailieunhanh - Linux For Dummies 6th Edition phần 10

Cho việc tìm kiếm các đài phát thanh "thường xuyên cung cấp phiên bản trực tuyến, tại nơi đầu tiên để thử SHOUTcast Radio-Locator. Khi bạn tìm thấy một trạm mà bạn muốn nghe: 1. Nhấp vào điều chỉnh trong! nút. Nếu bạn đã có phần mềm của bạn thiết lập, bạn có thể nghe tự động. | 396 Part VI Appendixes Archiving and compressing Although disk space isn t as much of a premium as it once was bandwidth and backup media still are. Subsequently this group provides a potpourri of tools for compacting and organizing data for storage as shown in Table A-1. Table A-1 Archiving and Compressing Tools Command Purpose bzip2 Compresses files into .bz2 format. Used mostly for incredibly large sets of text files which is what source code actually is . compress Compresses files into .Z format. Pretty old and not used much in the Linux world. gunzip Uncompresses .gz files and .tgz files. gzip Compresses files into .gz format. tar Packages files together in a group. uncompress Uncompresses files from .Z format. unzip Uncompresses files from .zip format. zip Compresses files into .zip format. Built-in bash commands Some commands don t even seem to exist if you try to look up their help information in the man pages and the commands don t show up as files on your system. Remember as you type commands at the prompt that you re communicating with a type of program called a shell. In my case it s bash the default Linux shell. The shell has a set of commands included in the following list that you can use to communicate with it as shown in Table A-2. Table A-2 Shell Commands Command Purpose alias Creates command shortcuts. env Lists your current environment variables and their settings. export Whenever you re told to set an environment variable use this first so that the variable will be remembered properly. Appendix A Common Linux Commands 397 Command Purpose history Lists off the last 1 000 commands you ve typed. unalias Removes command shortcuts. If you try to view the man page entry for some of these commands you find instead the help information for BASH BUILTINS loads. To search through this massive manual press the forward slash key to open the man search interface and then type the name of the command you want to search for. Press Enter to start the search. .

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