unix - sed edit file in-place - Stack Overflow Syntax is similar to sed, but certainly not exactly the same Even if you don't have a -i supporting sed, you can easily write a script to do the work for you Instead of sed -i 's foo bar g' file, you could do inline file sed 's foo bar g' Such a script is trivial to write For example:
What is the purpose of -e in sed command? - Unix Linux Stack Exchange In your example sed 's foo bar ' and sed -e 's foo bar ' are equivalent In both cases s foo bar is the script that is executed by sed The second option is more explicit, but that is probably not the reason that you often see -e used The reason for that is that -e makes it possible to use more than one script with the same invocation of sed
unix - What does sed -i option do? - Stack Overflow sed 's "p" 0 g' file txt > file txt Unfortunately because of the nature of redirects the above will simply produce a blank file Instead a temp file must be created for the output which later overwrites the original file something like this:
How to use variables in a command in sed? - Stack Overflow @tripleee While I'm certain that this would be a duplicate of numerous other questions, the one that you've pointed to isn't the best one since it doesn't contain slashes in the variable
What does \1 in sed do? - Stack Overflow @AbdullahJibaly The role of g is unrelated to anything in the back reference Without g, sed will only substitute the first occurrence of the regex on each line; with g you are saying, "if that succeeded, proceed from that point in the input string and replace the next one, too; repeat until you cannot find any more matches "
sed - Change multiple files - Stack Overflow For sed -i 's old new' *, the expansion of * must ALL be passed as an arglist to sed, and I'm fairly sure this has to happen before the sed process can even be started Using the for loop, the full arglist (the expansion of *) never gets passed as a command, only stored in the shell memory and iterated through I don't have any reference for
command line - What is sed and what is it used for? - Ask Ubuntu The sed utility is a batch (noninteractive) editor The sed commands are usually stored in a script-file although you can give simple sed commands from the command line Man page for sed (GNU sed) 4 2 2 : Sed is a stream editor