How do you grep two lines in Unix?
How do I grep for multiple patterns?
- Use single quotes in the pattern: grep ‘pattern*’ file1 file2.
- Next use extended regular expressions: egrep ‘pattern1|pattern2’ *. py.
- Finally, try on older Unix shells/oses: grep -e pattern1 -e pattern2 *. pl.
- Another option to grep two strings: grep ‘word1|word2’ input.
How do you replace a double quote in Unix?
Just use ” for the outer quotes in your sed and you can then use ‘ in the replacement. You don’t want “+ unless you might have more than one consecutive ” and you want to replace all of them. If you do, use sed -r “s/\”+/\’/g” .
How do you print double quotes in Unix?
To print a double quote, enclose it within single quotes or escape it with the backslash character. Display a line of text containing a single quote.
How do you grep special characters in Unix?
If you include special characters in patterns typed on the command line, escape them by enclosing them in single quotation marks to prevent inadvertent misinterpretation by the shell or command interpreter. To match a character that is special to grep –E, put a backslash ( ) in front of the character.
How do I grep next 10 lines?
4 Answers. You can use the -B and -A to print lines before and after the match. Will print the 10 lines before the match, including the matching line itself. -C 10 will print out 10 lines before AND after in one fell swoop!
How do I remove single quotes in UNIX?
2 Answers. You can do it with awk , The idea is to run a substitute command on columns 3 and 4 to replace the single quote with a blank. Here 47 represents the octal code for ‘ .
How do you convert single quotes to double quotes in Python?
You could also extend Python’s str type and wrap your strings with the new type changing the __repr__() method to use double quotes instead of single.
How do you skip quotes?
Insert one space between each of the three ellipsis points. Use ellipsis points at the beginning or end of a direct quotation (except in rare instances). Insert a space before and after the ellipsis points. Use ellipses to make a quote say something other than what the author originally intended.
How do I use grep?
The grep command searches through the file, looking for matches to the pattern specified. To use it type grep , then the pattern we’re searching for and finally the name of the file (or files) we’re searching in. The output is the three lines in the file that contain the letters ‘not’.
How do you grep special characters in Word?
If you include special characters in patterns typed on the command line, escape them by enclosing them in single quotation marks to prevent inadvertent misinterpretation by the shell or command interpreter. To match a character that is special to grep –E, put a backslash ( ) in front of the character.