在上述代码中,首先将原始字符串和子串都转换为小写,然后使用${string%%substring}的语法来删除尾随子串。${string%%substring}表示从字符串的末尾开始,删除最长匹配的子串。 运行以上脚本,输出结果为Hello,即删除了尾随子串"world"。 对于Bash脚本的更多详细信息,可以参考腾讯云的产品文档:Bash脚本。
invoke the shellasa login shell.Options:-c,--configFILELoad specified config file-e,--exec Treat remaining argumentsasthe command to execute-h,--hold never|start|error|always Keep window open after command
kill that many characters instead. */intrl_delete(count, key)intcount, key; {intxpoint;if(count <0)return(_rl_rubout_char (-count, key));if(rl_point == rl_end) { rl_ding ();return-1; }if(count >1|| rl_explicit_arg) { xpoint = rl_point;if(MB_CUR_MAX >1&& rl_byte_ori...
For example, the "Hello World" string contains ten characters and one space. Therefore, its length is eleven. Most scripting and programming languages have built-in or library functions for finding the length of a string. Likewise, in Bash there are many ways to manipulate Bash commands...
The keyword wc is one of the powerful keywords in the bash, and is used for getting counting the characters in a variable. Syntax: `echo $string_name | wc -c` In the example look carefully at the extra count which wc gives, and it is because it counts newline as an extra character...
在字符串中特定字串的数量 问题1093 Count PAT’s (25 分) The string APPAPT contains two PAT’s as substrings. The first one is formed by the 2nd, the 4th, and the 6th characters, and the second one is formed by the 3rd,...猜你喜欢...
问如何使用python或bash从原始数据中获取浮点？EN大多数 Linux 管理员使用 SAR 报告监控系统性能，因为它...
#Declare bash string variable BASH_VAR="Bash Script" # echo variable BASH_VAR echo $BASH_VAR # meta characters special meaning in bash is suppressed when using single quotes echo '$BASH_VAR "$BASH_VAR"' 1. 2. 3. 4. 5. 6.
echo "Word $count ($i) contains $(echo -n $i | wc -c) characters" done上面例子中,cat ~/.bash_profile命令会输出~/.bash_profile文件的内容,然后通过遍历每一个词,计算该文件一共包含多少个词,以及每个词有多少个字符。in list的部分可以省略,这时list默认等于脚本的所有参数$@。但是,为了可读性,最...
If the shell option nocasematch is enabled, the match is performed without regard to the case of alphabetic characters. Any part of the pattern may be quoted to force it to be matched as a string. Substrings matched by parenthesized subexpressions within the regular expression are saved in ...