expect script - automation to insert \ before "

[davidbelarus]

questions.
one of the lines that i pull has special characters, the ".
i know to mask them i precede them with a \.

how do i write script to pull the string in, insert \ in front of " it sees.

david

 

[Bong]

like so?

% regsub -all \" $s \\\" s2
2
% set s2
abc\"defsabc\"defs
%

where "s" is abc"defsabc"defs

_________________
Bob Rashkin

 

[davidbelarus]

thanks.


i had a little trouble understanding. can you maybe put terms in, like actual strings please. like s is the string below, but what about s2?

the string i will be grabbing is along these lines:
"boot -z "squash" "/home/David/"

 

[Bong]

regsub has four arguments (and, in this case, one option). The arguments are: pattern, souce string, substitution, target string. s2 is the target string. So, given the "-all" option, regsub finds all occurrences of pattern (") in source string and replaces them with substitution (\") and puts the result in target string.

_________________
Bob Rashkin

 

[davidbelarus]

thanks. that makes sense