Sed

sed is a unix command for stream data editor.

Special Characters

When dealing with special characters, use a different set of separators. For example: when dealing with ', use the following command:

sed "/'/d" OriginalTextualContent.txt > NoSeparator.txt 

Two or more replacement rules

If one needs to replace more than one set of characters, one can use the following expression:

sed -e "/'/d" -e "s/,/|/g" OriginalTextualContent.txt > NoSeparator.txt 

Note the two -e prefixes. These prefixes defines the multiple substitution expressions.

For more explainations, see Click here to see the portion that talks about special characters

Pattern matching with . * and $

To remove some string after certain character, say |, see the following example:

echo "Module:734556565|Module:certainModuleName3" | sed "s/|.*$//"

Output:

Module:734556565

To learn more about these pattern defining instructions, see Sed Commands.

Quick Tutorial

This 8 minute video could significantly speed up your understanding of sed.