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Single quotes need to be escaped by backslash in single-quoted strings, and double quotes in double-quoted strings.
One use of an escape sequence is to include a double-quote character in a string constant. Because a plain double quote ends the string, you must use ' \" ' to represent an actual double-quote character as a part of the string. For example: $ awk 'BEGIN { print "He said \"hi!\
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.
This maybe what you're looking for:
awk 'BEGIN {FS=" ";} {printf "'\''%s'\'' ", $1}'
That is, with '\'' you close the opening ', then print a literal ' by escaping it and finally open the ' again.
A single quote is represented using \x27
Like in
awk 'BEGIN {FS=" ";} {printf "\x27%s\x27 ", $1}'
Source
Another option is to pass the single quote as an awk variable:
awk -v q=\' 'BEGIN {FS=" ";} {printf "%s%s%s ", q, $1, q}'
Simpler example with string concatenation:
# Prints 'test me', *including* the single quotes.
$ awk -v q=\' '{print q $0 q }' <<<'test me'
'test me'
awk 'BEGIN {FS=" "} {printf "\047%s\047 ", $1}'
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