20 行实现一个 bash 常用路径书签 在运维的时候,需要经常 cd 到指定的位置去查日志、改代码,我常常无法忍受一些人那缓慢的打字速度,还经常输入错误,为什么不用用这个 20 行代码的工具呢? 将下列代码保存成 /path/to/m.sh 然后在 .bashrc 里 source /path/to/m.sh ,就可以使用了。 0)m + 将当前路径保...
例如,变量 file 表示文件“/var/www/tutorialspoint/unix/test.sh”,它的大小为100字节,具有 rwx 权限。下面的代码,将检测该文件的各种属性: #!/bin/sh file="/var/www/tutorialspoint/unix/test.sh" if [ -r $file ] then echo "File has read access" else echo "File does not have read access" ...
To execute the script, navigate to the directory where the script is saved and run the following command: ./test.sh Output: Current date and time: Tue Apr 16 18:45:12 IST 2014 3. Write a Bash script that prints the contents of a file named "output.txt" when executed. Code: #!/bi...
但首先要考虑的是背景：exec 是一个在Bash Shell脚本中使用的命令，它允许您替换当前进程的内容，包括进...
script-src 'nonce-uaNnEHfzLsxxxxzGq-KXSA' 'strict-dynamic' 'report-sample' 'unsafe-eval' 'unsafe-inline' https: http:;report-uri https://csp.withgoogle.com/csp/gws/other-hp < Accept-CH: Sec-CH-Prefers-Color-Scheme Accept-CH: Sec-CH-Prefers-Color-Scheme < P3P: CP="This is not a...
. Though, if your script makes use of the standard error output, then you still have the debug trace mixed with standard errors. To solve this problem, Bash can write the trace output generated by the xtrace shell option to a given file descriptor as specified by the $BASH_XTRACEFD ...
echo "-u: Update the script" echo echo "If run by root: datafiles in /Library/OpenPorts are created, but no output." echo "If run by any other user: output is displayed based on those datafiles." echo echo "This script is supposed to be used in conjunction with a launchd-component...
You’ll need to either use a log file that already exists like kern.log on some Linux systems, or replace it with a new one. Additionally, the value of MAXSIZE can be a value of your choice, and the script can be edited to suit the needs of your own configuration – you can even...
shell script ===> 效率高 ===>适合复杂的工作 我们使用的shell版本 [root@db04 ~]# bash -version GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl...
jb: write script in an easier way than bash. Contribute to txthinking/jb development by creating an account on GitHub.