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replacing ' with '' using sed

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# 1  
Old 03-31-2011
replacing ' with '' using sed
Hi,
I have a text file and I would like to replace all occurrences of single quote ' with two consecutive single quotes '' .
I have tried
Code:
sed s/\'/\'\'/ < Folder/outputFile.txt > Folder/otherFile.txt

but this replaces only the first occurrence of ' with ''. I want it to replace all the single quotes in the entire file with two single quotes.
So 'a' should become ''a'' and so on.
Thanks in advance.
# 2  
Old 03-31-2011
Hi.

Use the global modifier:

Code:
sed "s/'/''/g"

Code:
MAN SED
g       Make the substitution for all non-overlapping matches of the regular expression, not just
        the first one.

# 3  
Old 03-31-2011
Code:
echo "'" |sed 's:'\'':&&:'
''

# 4  
Old 03-31-2011
The octal code for single quote is 047. You can use that instead of \' so it won't appear too messy with the quotes
Code:
$ ruby -ne 'puts $_.gsub("\047","\047\047")' file

# 5  
Old 03-31-2011
Thank you very much for the replies. That ( sed "s/'/''/g" ) solved my problem Now I have another problem . I have a file with multi-line text in it. I want the same file to have its entire content surrounded by single quote. So if the file has text
Code:
abcdef
pqrst
uvw

I want it to be
Code:
'abcdef
 pqrst
 uvw'

How can I achieve this? Thank u in advance.
# 6  
Old 03-31-2011
Code:
echo "abcdef
pqrst
uvw" |sed "N;N;s/^.*$/'&'/"
'abcdef
pqrst
uvw'

# 7  
Old 03-31-2011
Code:
$ ruby -0777 -ne 'print "\047#{$_}\047"' file
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