Checking for substring in bash using if else statement If you are familiar with theconditional statements in bash, you can use it to check if a string contains the substring in the following manner: if [[ $fullstring == *"$substr"* ]]; Simple example for checking substring The double br...
One of the most common operations when working with strings in Bash is to determine whether or not a string contains another string. In this article, we will show you several ways to check if a string contains a substring.
另请参见:Bash String Comparison: Find Out IF a Variable Contains a Substring
它会扩展成 值中以 为开始,长为 个字符的字符串。...它的使用方法为:借助 cut 命令可以使用 命令来将文件中每一行或者变量中的一部分删掉。...它的语法为:想了解更多请阅读 bash 的 man 页:另请参见:Bash String Comparison: Find Out IF a Variable Contains a Substring 1.8K90 如何在 Bash Shell ...
如果你调用你的脚本test,当你在 shell 提示符下键入test时,它将不会运行;将运行由type标识的第一个命令。(关于type和test,我将在后面的章节中详细讨论。) 通常,Unix 命令名尽可能短。它们通常是描述性词语的前两个辅音(例如,mv代表m o v e 或ls代表l i s t)或描述性短语的第一个字母(例如,ps代表p...
az account list --query "[? contains(name, 'Test')].id" -o tsv # Returns the subscription id of a non-default subscription containing the substring 'Test' subscriptionId="$(az account list --query "[? contains(name, 'Test')].id" -o tsv) # Captures the subscription id as a varia...
# of the LINENO environment variable. It contains the current # line number. echo"Example of error with line number and message" error_exit"$LINENO: An error has occurred." 在bash脚本中有更好的错误处理例程吗? 相关讨论 请参阅这个详细的答案:在bash脚本中引发错误。
1. fvt-setup-1:Toperform initial setup.2. fvt-server-2:Toperform server commands.3. fvt-client-3:Toperform client commands.4. fvt-cleanup:Tocleanup the temporary files,inordertoprepareforthe repetitionofthe above test cases. 4. 在每个 shell 脚本中提供注释和说明 ...
String 'echo "My string"' don't contain substring: 'alt'. String 'echo "My string"' contain substring: 'str'. Run Code Online (Sandbox Code Playgroud) 成一个功能 正如@EeroAaltonen所说,这是一个相同的演示版本,在相同的shell下测试: myfunc() { reqsubstr="$1" shift string="$@" if ...
# echo "String '$string' don't contain substring: '$reqsubstr'." false fi } export-fdoContain nst='a=two;b=onetwothree; x=100000; while [ $x -gt 0 ]; do TEST ; x=$(($x-1)); done' nst='a=nonesvch; b=nosuchmatchnosuchmatchnosuchmatchnosuchmatchnosuchmatchnosuchmatchnosuc...