if [[ $str =~ [0-9]+ ]]; then. echo "String contains one or more numbers" else. echo "String does not contain any numbers" fi. 在上面的示例中,我们使用了"+"符号来匹配一个或多个数字。如果字符串中包含一个或多个数字,则输出"String contains one or mor
if["$(cat myfile.txt)"="hello"];thenecho"File contains the string 'hello'."elseecho"File does not contain the string 'hello'."fi 如果文件包含字符串"hello",则脚本将打印以下内容: Filecontainsthestring'hello'. 使用正则表达式 正则表达式是一种强大的模式匹配语言,可用于在文本中搜索复杂模式。Ba...
if [ "$str1" != "$str2" ]; then echo "Strings are not equal" else echo "Strings are equal" fi 字符串为空比较:可以使用双等号(==)来比较一个字符串是否为空。例如: 代码语言:txt 复制 str="" if [ "$str" == "" ]; then echo "String is empty" else echo "String is not empty"...
$ ./check_substr.sh "This is a test string" "is a test" "This is a test string" contains "is a test" $ ./check_substr.sh "This is a test string" "isa test" "This is a test string" does not contain "isa test" $ ./check_substr.sh "This is a test string" "new string"...
echo"$1 contains at last on occurence of root"elseecho"$1 does not contain"fi exit0并chmod777test.sh, 执行: ./test.h /etc/passwd 之后,返回 File contains at last on occurence of root4.一个if/then结构可以包含多级比较和tests(嵌套)if[ condition -true] ...
Bash: How to Check if String is Not Empty You may not have experienced it, but it does happen. One of these days, you may experience it. Sometimes, a bash script may contain empty variables. Here, we have provided every detail on how to check for empty variables in a bash script, ...
line 26) `assert_output --partial "CI_COMMIT_REF_SLUG"' failed -- output does not contain substring -- substring (1 lines): CI_COMMIT_REF_SLUG output (3 lines): ./bin/deploy.sh: join_string_by: command not found oc error Could not login -- ** Did not delete , as test failed...
if [[ $string2 = *"Bash"* ]] then printf "Contains word 'Bash'. \n" else printf "Does not contain the word. \n" fi 如何把for语句放在一行里执行? #!/bin/bash # For statement in multiple lines for((i=1;i<10;i+=2))
string1="Hello World!" string2="Hello Bash!" if [[ $string1 == "Hello World!" ]] then printf "Same! \n" else print "Different! \n" fi if [[ $string2 = *"Bash"* ]] then printf "Contains word 'Bash'. \n" else printf "Does not contain the word. \n" ...
[ 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,...