if [[ "$str" == *.txt ]]; then echo "The string ends with .txt." fi 3. 掌握在bash脚本中进行字符串比对的实际应用示例 以下是一个简单的 Bash 脚本示例,展示了如何在脚本中进行字符串比对: bash #!/bin/bash str1="hello" str2="world" # 检查字符串是否相等 if [ "$str1" = "$str...
In addition to logical flags there are also logical operators. One of the most useful logical operators is the regex match operator=~. The regex match operator compares a string to a regular expression and if the string is a match for the regex then the expression is equivalent totrue, othe...
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 1. 2. 1.string.strip() :...
How to check if a string is in an array? How to use the Bash ternary operator? How to negate an if condition in a Bash if statement? (if not command or if not equal) How to use the BASH_REMATCH variable with the Regular Expression Operator =~?
if [[ $var == *sub_string ]]; then printf '%s\n' "var ends with sub_string." fi # Inverse (var does not end with sub_string). if [[ $var != *sub_string ]]; then printf '%s\n' "var does not end with sub_string." fi...
{version:-1}" } #@ USAGE: readline var prompt default #@ DESCRIPTION: Prompt user for string and offer default ## #@ Define correct version for your version of bash or other shell bashversion=${BASH_VERSION%%.*} if [ ${bashversion:-0} -ge 4 ] then ## bash4.x has an -i ...
string(字符串) list(列表) tuple(元组) set(集合) dictionary(字典) 5.1、Python变量的声明与使用 变量:作用是存储程序运行中的值,变量的值在程序运行中是可以变化的,变量必须先声明再使用。 Python变量的声明:变量名=值 在Python中变量是没有数据类型的,变量的数据类型取决于赋值的类型,这与其他语言不一样。
if [[ $var != sub_string* ]]; then printf '%s\n' "var does not start with sub_string." fi 判断字符串是否以子字符串结尾 if [[ $var == *sub_string ]]; then printf '%s\n' "var ends with sub_string." fi # Inverse (var does not end with sub_string). if [[ $var != ...
例子 ./cidr-to-ip.sh [OPTION(only one)] [STRING/FILENAME] -h 显示此帮助屏幕 -f 在...
if [[ $var != sub_string* ]]; then printf '%s\n' "var does not start with sub_string." fiCheck if string ends with sub-stringif [[ $var == *sub_string ]]; then printf '%s\n' "var ends with sub_string." fi # Inverse (var does not end with sub_string). if [[ $var...