if [[ $string == *Hello* ]]; then echo "The string contains 'Hello'" fi ``` 在上面的示例中,首先定义了一个字符串变量string,然后使用if语句判断该字符串是否包含“Hello”这个子字符串。如果包含,则输出提示信息。需要注意的是,在if语句中双括号“[[”和“]]”用来扩起条件判断表达式,这是Bash sh...
str="example" if [[ "$str" =~ [a-z]+ ]] then echo "String contains lowercase letters" else echo "String does not contain lowercase letters" fi ``` 这段代码将输出 "String contains lowercase letters",因为变量 str 中的字符串包含小写字母。 总的来说,Linux 中的 if 语句和字符串匹配是编...
Here, we’re searching for the pattern that contains the word “apple”. Ifsedfinds it, then it will expandthe command substitutionwith the result. Next, the-noperator of the builtin[ ], will have a successful exit status if the length of the string returned is non-zero. Similar to th...
Operations with strings vary from splitting to the removal of whitespaces to checking if a string contains spaces. JavaScript provides built-in string methods and features that allow us to manipulate or work with strings. Strings are immutable, and so the way we work with them can be a little...
*/ void * vm_private_data; /* was vm_pte (shared mem) */ #ifdef CONFIG_ANON_VMA_NAME /* * For private and shared anonymous mappings, a pointer to a null * terminated string containing the name given to the vma, or NULL if * unnamed. Serialized by mmap_sem. Use anon_vma_name ...
if (str.matches(".*"+sub+".*")) { // do something } StringUtils.contains 判断是否包含某个字符 org.apache.commons.lang.StringUtils contains方法 写道 public static boolean contains(String str, char searchChar) Checks if String contains a search character, handling null. This method uses String...
unlikeDT_RPATH,which is applied to searchesforall childreninthe dependency tree.o From the cache file/etc/ld.so.cache,which contains a compiled listofcandidate shared objects previously foundinthe augmented library path.If,however,the binary was linkedwiththe-z ...
-n is one of the supported bash string comparison operators used for checking null strings in a bash script. When -n operator is used, it returns true for every case, but that’s if the string contains characters. On the other hand, if the string is empty, it won’t return true. ...
String javaHome = System.getenv("JAVA_HOME"); String osName = System.getProperties().getProperty("os.name"); // "Windows 10" String command = null; String charset = null; //ProcessBuilder processBuilder = null; if(osName.toLowerCase().contains("windows")){ //processBuilder = new Process...
#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <pthread.h>#include <sys/stat.h>int main(int argc,char *argv[]){struct stat sbuf;int ret =lstat(argv[1],&sbuf);if(ret == -1){perror("stat error");exit(1);}if(S_ISREG(sbuf.st_mode)){pr...