问题描述给一个配置的字符串例如 NSString *string = @"34563879-+4561346573"; 现在我想获取到字符串第3个字符串3所在的位置。...NSStringCompareOptions)mask range:(NSRange)rangeOfReceiverToSearch searchString 这个参数是我们需要查找的字符串...NSAnchoredS
Comparison operators are used in bash to compare two strings to check if they are equal or not. Here, we will list some comparison operators including, string, and integer operators. Integer Operators Operators Explanation -eq is equal to -ne is not equal to -gt is greater than -ge is gr...
=’. When it is used, the string to the right of the operator is considered a POSIX extended regular expression and matched accordingly (using the POSIX regcomp and regexec interfaces usually described in regex(3)). The return value is 0 if the string matches the pattern, and...
--ftps-fallback-to-ftp fall back to FTP if FTPS is not supported in the target server WARC options: --warc-file=FILENAME save request/response data to a .warc.gz file --warc-header=STRING insert STRING into the warcinfo record --warc-max-size=NUMBER set maximum size of WARC files ...
Comparison operators are used in bash to compare two strings to check if they are equal or not. Here, we will list some comparison operators including, string, and integer operators. Integer Operators Regular Expressions Regular expressions are shortened as ‘regexp' or ‘regex'. They are string...
The string to the right of the operator is considered a POSIX extended regular expression and matched accordingly. Be careful, this will not look for an exact match as it uses a shell regex. [me@linux ~]$ myArray=(a b c d) [me@linux ~]$ [[ ${myArray[*]} =~ 'a' ]] && ...
‘test’: Check file types and compare values man test(获取帮助) test的判断表达式分为4类 string integer expression file test exits with the status determined by EXPRESSION. Placing the EXPRESSION between square brackets ([ and ]) is the same as testing the EXPRESSION with test. To see...
tr -d '*': delete all * from input and output to stdout env set environment and execute command, or print environment shasum accept from std input/FILE, std output SHA-1(default) hash shasum -a 256 [FILE]: generate hash cmp compare byte by byte openssl cryptography toolkit test conditi...
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...
processes_ram_sum.sh - sums the RAM usage of all processes matching a given regex in GB to one decimal place pldd.sh - parses /proc on Linux to show the runtime .so loaded dynamic shared libraries a program pid is using. Runtime equivalent of the classic static ldd command and because...