Create a new script, sub2, taking three parameters...
1.) the string to be replaced
2.) the string with which to replace it
3.) the name of the file in which to make the substitution
...that treats the string to be replaced as plain text instead of as a regular expression.
Hint 1: Try to get the string to be replaced into a shell variable (e.g., $target). Then use a sed command to rewrite any special regular expression characters in that string so that they get treated as text, storing the result in a second shell variable (e.g., $newTarget). Then issue the actual command to perform the substitutions on the file.
Hint 2: For technical reasons, this task is probably easier accomplished in /bin/sh than in /bin/csh. If you insist upon using csh to run your script, you might need to solve this by writing your sed commands into a separate temparary file and using the -f option of sed to run commands from that file.
This is what I've got so far, but for some reason I keep getting the same error message...
and the error message I get is...
sed: -e expression #1, char 8: Invalid back reference
Hi,
i am getting this error........
find ./ | sed '/\(*\) \(*\)/\2\1/'
Unrecognized command: /\(*\) \(*\)/\2\1/
Any idea???
regards
Apoorva Kumar (4 Replies)
My input text has the following pattens:
func_a(3,
4,
5);
I want to replace it with this:
func_b(3,
4,
5,
6);
I'm trying the following expression, but it does not work:
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I am missing something somewhere.
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