解决方法:使用=进行严格相等性比较,或者对字符串进行引用,例如"${string1}" == "${string2}"。 示例代码 代码语言:txt 复制 #!/bin/bash string1="hello" string2="world" if [ "${string1}" = "${string2}" ]; then echo "Strings are equal." ...
#!/bin/bash # 示例1:使用 = 进行字符串相等比较 string1="hello" string2="hello" if [ "$string1" = "$string2" ]; then echo "The strings are equal." else echo "The strings are not equal." fi # 示例2:使用 != 进行字符串不相等比较 string1="hello" string2="world" if [ "$stri...
else echo "Strings are not equal." fi 2. 使用 tr 命令去除所有空白字符 代码语言:txt 复制 string1=$(echo "your_string" | tr -d '[:space:]') string2=$(echo "your_string" | tr -d '[:space:]') if [ "$string1" == "$string2" ]; then echo "Strings are equal." else echo...
String1 and String3 are not equal. 这里,如果我们先用 = 运算符比较 String1 和 String2。由于 String1 和 String2 都具有相同的长度,具有相同的字符序列,比较运算符返回 true,因此我们得到 String1 and String2 are equal.. 作为程序中第一个 if-else 块的输出。 同样,在第二个程序中,我们使用 == 运...
str2 - the second String, may be null Returns: true if the Strings are equal, case insensitive, or both null In Bash 判断字符串相等 格式1:test "$S1" = "$S2" 格式2:[ "$S1" = "$S2" ] 格式3:test "$S1" == "$S2" 格式4:[ "$S1" == "$S2" ] ...
string2="oranges" if [ "$string1" = "$string2" ]; then echo "The two strings are equal." else echo "The two strings are not equal." fi 这是我们执行脚本时的结果: $ ./test.sh The two strings are not equal. 例2 我们还可以使用运算符来测试两个字符串是否不相等!=。
The two strings are not equal. 1. 2. 例2 我们还可以使用运算符来测试两个字符串是否不相等!=。 #!/bin/bash string1="apples" string2="oranges" if [ "$string1" != "$string2" ]; then echo "Strings are different." else echo "Strings are not different." ...
如果相等,则输出"Strings are equal",否则输出"Strings are not equal"。 接下来,让我们来看看如何在Bash中使用正则表达式进行字符串匹配。我们可以使用"=~"符号来进行正则表达式匹配,例如: bash. #!/bin/bash. str="hello world" if [[ $str =~ [0-9] ]]; then. echo "String contains a number" ...
if [ "$a" -gt "$b" ]; then echo "$a is greater than $b" elif [ "$a" -eq "$b" ]; then echo "$a is equal to $b" else echo "$a is less than $b" fi 循环:包括 for 循环和 while 循环。 # for 循环 for i in {1..5}; do echo "Number: $i" done # while 循环...
[ STRING1 > STRING2 ] 如果 “STRING1” sorts after “STRING2” lexicographically in the current locale则为真。 [ ARG1 OP ARG2 ] “OP” is one of -eq, -ne, -lt, -le, -gt or -ge. These arithmetic binary operators return true if “ARG1” is equal to, not equal to, less than...