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I need to replace all occurrences of the control character CTRL+A (SOH/ascii 1) in a text file in linux, how can this be achieved in SED?
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You need to escape the special characters with a backslash \ in front of the special character. For your case, escape every special character with backslash \ .
How SED Works. In the syntax, you only need to provide a suitable “new string” name that you want to be placed with the “old string”. Of course, the old string name needs to be entered as well. Then, provide the file name in the place of “file_name” from where the old string will be found and replaced.
Replacing all the occurrence of the pattern in a line : The substitute flag /g (global replacement) specifies the sed command to replace all the occurrences of the string in the line.
Try:
sed 's/^A/foo/g' file
Use Ctrl+V+A to create the ^A sequence in the above command.
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