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I want to display a string in Bash like this
I'm a student Of course you can do it like this
echo "I'm a student" But how to accomplish this while using single quote around the string ?
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' End first quotation which uses single quotes. " Start second quotation, using double-quotes. ' Quoted character. " End second quotation, using double-quotes.
Bash escape character is defined by non-quoted backslash (\). It preserves the literal value of the character followed by this symbol. Normally, $ symbol is used in bash to represent any defined variable.
A single quote is not used where there is already a quoted string. So you can overcome this issue by using a backslash following the single quote. Here the backslash and a quote are used in the “don't” word.
Use escapeEcmaScript method from Apache Commons Lang package: Escapes any values it finds into their EcmaScript String form. Deals correctly with quotes and control-chars (tab, backslash, cr, ff, etc.). So a tab becomes the characters '\\' and 't' .
echo 'I\'m a student' does not work. But the following works:
echo $'I\'m a student' From the man page of bash:
A single quote may not occur between single quotes, even when preceded by a backslash.
....
Words of the form $'string' are treated specially. The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C standard.
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