echo -e '\E[32m' "Operating System Type:" $reset_terminal $os #Check OS Release Version and Name os_name=$(cat /etc/centos-release) echo -e '\E[32m' "Check OS Release Version and Name:" $reset_terminal $os_name #Check Architecture architeture=$(uname -m) echo -e '\E[32m' ...
使用/etc/os-release可能是最好的解决方案，但不要为了信息而使用grep;该文件是shell变量的集合，可以使...
To check the current shell in use on Linux, the default being Bash, you can utilize commands provided by Linux utilities. Similarly, to explore the installed shells on your system, you can refer to specific guides, such as those found on Baeldung.
In this guide, learn how to use a bash command to check if a file or directory exists. Prerequisites A Linux operating system. Access to a terminal window / command line (Ctrl+Alt+T). Note:Abash scriptis a sequence of several commands to the shell. It can be saved as a file and is...
echo "File deletion failed. Check results" >&2 exit 1 ficase 结构case结构用于多值判断,可以为每个值指定对应的命令,跟包含多个elif的if结构等价,但是语义更好。它的语法如下。case expression in pattern ) commands ;; pattern ) commands ;; ... esac上面代码中,expression是一个表达式,pattern是表达式的...
/bin/bashSTR='GNU/Linux is an operating system'SUB='Linux'#if [[ $VAR =~ .*Linux.* ]]; thenif[["$STR"==*"$SUB"*]];thenecho"It's there."fi grep通常用于搜索文件,grep也可读取标准输入,因此你也可以使用grep检查字符串是否包含你指定的字符串。
Used to check host reachability. nslookup Used for DNS query. ssh Used to login remote Linux system. scp -r dir user@remote-ip:/opt/ Copy all files and directories recursively from the local system to a remote system. scp -r user@remote-ip:/opt/ dir/ Copy all files and directories ...
operating system, we have also got the same file system i.e., directories and sub-folders. Bash programming came up with some of the very simple commands and statements to check if the specific directory of a file exists in our system or not. Therefore, we have decided to write this ...
The problem is that the build process doesn’t know which of the three machines is the target: Sulu, Checkov, or Fraiser. (Long story.) So, I manually look at the file name, copy it, and rename it. Of course, this is an error-prone process, and I’m basically lazy, so I deci...
This may be used to check a shell script for syntax errors. This is ignored for interactive shells. -o option-name The option-name can be one of the follow ing: allexport Same as -a. braceexpand The shell performs brace expansion (see Brace ...