语法startswith()方法语法：str.startswith(str, beg=0,end=len(string));参数str -- 检测的字符串。
#!/bin/bash string="hello123" # 模式匹配 if [[ "$string" == "hello"* ]]; then echo "The string starts with 'hello'." else echo "The string does not start with 'hello'." fi # 正则表达式匹配 if [[ "$string" =~ ^hello[0-9]+$ ]]; then echo "The string matches the rege...
and # strips from the front of the string, so it strips the substring “bash.” from the variable called filename. In second echo statement substring ‘.*’ matches the substring starts with dot, and % strips from back of the string, so it deletes the substring ‘.txt’ ...
lower() { # Usage: lower "string" printf '%s\n' "${1,,}" } 示例用法: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $ lower "HELLO" hello $ lower "HeLlO" hello $ lower "hello" hello 将字符串改为大写 警告: 需要bash 4+ 示例函数: 代码语言:javascript 代码运行次数:0 运行 AI...
In the first echo statement substring ‘*.’ matches the characters and a dot, and # strips from the front of the string, so it strips the substring “bash.” from the variable called filename. In second echo statement substring ‘.*’ matches the substring starts with dot, and % strips...
1.string.endswith(obj, beg=O,end=len(string)) :检查字符串是否以obj结束,如果beg或者end指定则检查指定的范围内是否以obj结束,如果是,返回True,否则返回False 2.string.islower() :如果string中包含至少一个区分大小写的字符,并且所有这些字符都是小写,则返回True,否则返回False ...
String starts with Hello Substring Extraction To extract a substring based on a regular expression pattern, use ${} syntax with =~ operator ? Open Compiler mystring="Hello, world!"if[[$mystring=~([A-Za-z]+),]];then echo"Match found: ${BASH_REMATCH[0]}"echo"First group: ${BASH_...
’ matches the characters and a dot, and # strips from the front of the string, so it strips the substring “bash.” from the variable called filename. In second echo statement substring ‘.*’ matches the substring starts with dot, and % strips from back of the string, so it delete...
case "$var" in *sub_string*) # Do stuff ;; *sub_string2*) # Do more stuff ;; *) # Else ;; esac 1 2 3 4 5 6 7 8 9 10 11 12 13检查字符串是否以子字符串开头if [[ $var == sub_string* ]]; then printf '%s\n' "var starts with sub_string." fi # Inverse (var ...
Write a Bash script that takes a string as an argument and prints “how proper” if the string starts with a capital letter. Write a Bash script that takes one argument and prints “even” if the first argument is an even number or “odd” if the first argument is an odd number. ...