Learning Linux Shell Scripting - Second Edition

sed scripting

The sed script file contains a list of sed commands in a file. To inform sed about our script file, we should use the -f option before the script filename. If the sed commands are not separated by a new line, then every command should be separated by a colon ":". We should make sure that there aren't any trailing whitespaces after any of the commands in the sed script file; otherwise, sed will give an error. sed takes each line in the pattern buffer and then it will process all commands on that line. After this line is processed, the next line will be loaded in the pattern buffer. For the continuation of any sed command that cannot be fitted on one line, we need to add one backslash at the end of the line to inform it of the ...