差異處
這裏顯示兩個版本的差異處。
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linux:shell_script [2022/07/08 17:21] tony [抓mac] |
linux:shell_script [2023/06/25 09:48] |
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| - | {{tag>Linux ShellScript}} | ||
| - | ====== Shell Script ====== | ||
| - | ShellScript有多強大我不必贅述。我所撰寫的文章都是以前遇到問題所想到的解決方法，也許不是每個做法都很完美，畢竟都是遇到的東西越多，才越能學習到更多更精闢的語法。 | ||
| - | ===== Article List ===== | ||
| - | * [[.sell_script:sh_power_on_off_vm|如何透過Shellscript去開啟與關閉你的VM?]] | ||
| - | * [[.sell_script:sh_kill_proc|如何給予一個關鍵字去砍掉對應的Process?]] | ||
| - | * [[.sell_script:searchPort|找尋被佔用的Port]] | ||
| - | * [[.sell_script:replaceFiles|替換檔案]] | ||
| - | * [[.sell_script:process_time|Process Time]] | ||
| - | * [[.shell_script:setupAutologin|AutoLogin]] | ||
| - | * [[.shell_script:replaceString|字串取代]] | ||
| - | * [[.shell_script:searchPortFromProcess|如何由PID去找它所佔用的port?]] | ||
| - | * [[.shell_script:rebindAllSCSI|Rebind所有的SCSI hard drive]] | ||
| - | * [[.shell_script:nc|nc - netcat]] | ||
| - | * [[.shell_script:get_local_ip|取得IP Address]] included ipv4, ipv6 and cable status | ||
| - | * [[.shell_script:execution_time_measurement|測量執行時間]] | ||
| - | * [[.shell_script:bypass_invalid_options_of_getopts|Bypass invalid options of getopts]] | ||
| - | ===== 暫存區 ===== | ||
| - | ==== grep space ==== | ||
| - | 並非所有系統grep都支援\s去偵測空白，可以使用[:space:]或[:blank:]當替代方案。(實測SLES11 grep 2.5.1不支援\s寫法) | ||
| - | * [[http://unix.stackexchange.com/questions/81916/how-to-find-a-space-in-a-text-using-grep|how-to-find-a-space-in-a-text-using-grep?]] | ||
| - | * [[http://linux.vbird.org/linux_basic/0330regularex.php|鳥哥 - 正規表示法與文件格式化處理]] | ||
| - | ==== 確認行數 ==== | ||
| - | 代表有15行。 | ||
| - | <code bash> | ||
| - | > lspci | awk '{ print NR }' | ||
| - | 1 | ||
| - | 2 | ||
| - | .. | ||
| - | 15 | ||
| - | </code> | ||
| - | ==== Assign指令結果至變數 ==== | ||
| - | 使用`號去包起來，以下範例會顯示123。 | ||
| - | <code bash> | ||
| - | VAR=`echo 123` | ||
| - | echo $VAR | ||
| - | </code> | ||
| - | 假如指令有問題也要一併導至VAR，可以透過將stderr導向stdout: | ||
| - | <code bash> | ||
| - | VAR=`ff 2>&1` | ||
| - | echo $VAR | ||
| - | </code> | ||
| - | |||
| - | ==== 抓mac ==== | ||
| - | <code bash> | ||
| - | ifconfig | grep -o -E '([[:xdigit:]]{2})(:[[:xdigit:]]{2}){5}' | ||
| - | </code> | ||
| - | ==== 設dns ==== | ||
| - | <code shell> | ||
| - | systemd-resolve --set-dns=10.146.125.97 --interface enp3s0f0 | ||
| - | </code> | ||
| - | |||
| - | |||
| - | |||
| - | ===== Reference ===== | ||
| - | * [[http://bbs.chinaunix.net/thread-452942-1-1.html|Shell基礎12篇]] | ||
| - | * [[http://bbs.chinaunix.net/thread-218853-1-1.html|Shell 13問]] | ||
| - | * [[http://stackoverflow.com/questions/3701809/how-to-detect-using-of-wildcard-asterisk-as-parameter-for-shell-script|看起來可以解決傳遞*參數問題]] 待試.. | ||
| - | * [[http://www.21andy.com/blog/20071121/677.html|nohup]] | ||
| - | * [[http://stackoverflow.com/questions/8742783/returning-value-from-called-function-in-shell-script|Function Call Return Value的三種方式]] | ||
| - | * [[http://www.jz123.cn/text/1633374.html|解決在Windows上修改後，跳行的問題]] | ||
| - | * [[http://www.cyut.edu.tw/~dywang/linuxProgram/node20.html|awk工具]] | ||
| - | * [[http://shabirimam.wordpress.com/2009/03/10/adding-script-to-run-at-startup-or-shutdown/|adding-script-to-run-at-startup-or-shutdown]] | ||
| - | * [[http://stackoverflow.com/questions/314675/how-do-i-redirect-the-output-of-an-entire-shell-script-within-the-script-itself|Redirect the output of an entire shell script]] | ||
| - | * [[http://mark528.pixnet.net/blog/post/7267334-shell-script%3A-%E6%8E%A7%E5%88%B6%E6%96%87%E5%AD%97%E9%A1%8F%E8%89%B2|控制文字顏色]] | ||
| - | * [[http://stackoverflow.com/questions/11952854/how-to-check-if-the-variable-value-in-awk-script-is-null-or-empty|awk處理空字串]] | ||
| - | * [[http://www.thegeekstuff.com/2010/07/perl-tcp-udp-socket-programming/|Perl - How To: Perl TCP / UDP Socket Programming using IO::Socket::INET?]] | ||
| - | * [[http://unix.stackexchange.com/questions/140750/generate-random-numbers-in-specific-range|Gen Random value]] | ||
| - | * [[http://unix.stackexchange.com/questions/178899/optimizing-logical-sector-size-for-physical-sector-size-4096-hdd|取得HD sector資訊的command]] (應還有smartctl) | ||
| - | * [[http://unix.stackexchange.com/questions/88281/method-to-check-connectivity-to-other-server|how to test connection?]] | ||
| - | * [[http://stackoverflow.com/questions/1761341/awk-print-next-record-following-matched-record|Search Fields]] | ||
| - | * [[http://stackoverflow.com/questions/5152858/how-can-i-measure-a-duration-in-seconds-in-a-linux-shell-script|how-can-i-measure-a-duration-in-seconds-in-a-linux-shell-script]] | ||
| - | * [[http://yenpai.idis.com.tw/archives/384-%E6%95%99%E5%AD%B8-centos-%E5%90%83%E4%BA%86%E6%88%91%E7%9A%84%E8%A8%98%E6%86%B6%E9%AB%94-cache-memory|清記憶體]] | ||
| - | * [[http://blog.xuite.net/yipo.lin/blog/34151062-%E6%9F%A5%E7%9C%8BLinux%E7%A1%AC%E7%A2%9F%E8%A3%A1%E9%82%A3%E5%80%8B%E8%B3%87%E6%96%99%E5%A4%BE%E4%BD%94%E7%9A%84%E7%A9%BA%E9%96%93%E6%9C%80%E5%A4%9A|查資料夾使用硬碟空間大小]] | ||
| - | * [[https://unix.stackexchange.com/questions/345595/how-to-set-ulimits-on-service-with-systemd|修改systemd service的ulimit]] | ||
| - | * [[https://unix.stackexchange.com/questions/118680/difference-between-ulimit-n-and-proc-pid-limits|Difference between ulimit -n and /proc/$PID/limits]] | ||
| - | ==== sed ==== | ||
| - | * [[http://askubuntu.com/questions/76785/how-to-escape-file-path-in-sed|escape file path with sed]] | ||
| - | ==== network ==== | ||
| - | * [[https://unix.stackexchange.com/questions/441877/identify-if-a-network-interface-is-a-veth-using-sys-class-net|辨別網卡是否為veth]] | ||
