echo "Here's how we can use single ' and double \" quotes within double quotes" 它将会给出这个: Here's how we can use single ' and double " quotes within double quotes 需要注意的是,如果一个单引号不在双引号内,那么它通常会被解释为一个引用字符串的开头,但在双引号内则会被忽略。然而...
2、双引号 Using double quotes the literal value of all characters enclosed is preserved, except for the dollar sign, the backticks(backward single quotes, ``) and the backslash. The dollar sign and the backticks retain their special meaning within the double quotes. The backslash retains its ...
3.1.2.2 单引号(Single Quotes) 将字符用单引号'括起来可以保留引号内每个字符的字面值。单引号之间不能出现另一个单引号,即使它前面有转义符\也不行,即结束符不能被转义。 3.1.2.3 双引号(Double Quotes) 在双引号"中,除$、`(反引号)和转义符\外的其他字符保持其字面值不变。$和 `(反引号)在双引号内...
3.1.2.2 单引号(Single Quotes) 将字符用单引号'括起来可以保留引号内每个字符的字面值。单引号之间不能出现另一个单引号,即使它前面有转义符\也不行,即结束符不能被转义。 3.1.2.3 双引号(Double Quotes) 在双引号"中,除$、`(反引号)和转义符\外的其他字符保持其字面值不变。$和 `(反引号)在双引号内...
# meta characters special meaning in bash is suppressed when using single quotes echo '$BASH_VAR "$BASH_VAR"' 1. 2. 3. 4. 5. 6. 7. 8. 9. 16.3. Double Quotes Double quotes in bash will suppress special meaning of every meta characters except "$", "\" and "`". Any other meta...
Quotes in shell(bash, csh)There are three kinds of quote: single quote('), double quote("), backslash(), how shell explain these characters depends on the context. Often we refer to quote in shell script, we means quotes pair except backslash. Double quote is called weak quote, single ...
"End second quotation, using double-quotes. 'Start third quotation, using single quotes. If you do not place any whitespaces between (1) and (2), or between (4) and (5), the shell will interpret that string as a one long word. ...
By Lowell Heddings News Reader
Different types of quotes are used in Bash to define a string data or execute a command. These are single quotes, double quotes, and back quotes or backticks. When the “echo” command is used with the single quotes, each character of the string is parsed without any expansion. That mean...
# e.g. add >$i to the first line (to make a bioinformatics FASTA file) sed "1i >$i" # notice the double quotes! in other examples, you can use a single quote, but here, no way! # '1i' means insert to first line 同时使用环境变量和尾符号 # 使用反斜杠 $ 符,同时使用双引号来...