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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
Sed to delete blank spaces - Ask Ubuntu Does anyone know how to use Sed to delete all blank spaces in a text file? I haven been trying to use the "d" delete command to do so, but can't seem to figure it out
Appending to end of a line using sed - Ask Ubuntu You can use this: sed 's $ *** ' filename If you want to search for a specific string before appending to a line (that is you don't want it appended to EVERY line like the above command) you can use the following, this finds Fred Flintstone anywhere in a line, put ^ in front if you only want to match the beginning of the line sed ' Fred Flintstone s $ *** ' filename
sed - How to insert text before the first line of a file? - Unix . . . Use sed 's insert (i) option which will insert the text in the preceding line sed '1 i\ Question author's update: To make it edit the file in place - with GNU sed - I had to add the -i option: sed -i '1 i\anything' file Also syntax sed -i '1i text' filename For non-GNU sed You need to hit the return key immediately after the backslash 1i\ and after first_line_text: sed -i '1i\ first_line_text
bash - Unterminated `s command - Unix Linux Stack Exchange GNU sed would complain exactly the way that you describe when using a replacement string that contains literal newlines Don't use grep to filter the output of ls If you want to get all names in he current directory matching the pattern * pub, use filenames=( * pub ) This would create an array containing all names that matches the given
How do I substitute only first occurence with sed? If you are using GNU sed, try: sed -e '0, claudio s claudio claudia ' nomi sed does not start checking for the regex that ends a range until after the line that starts that range From man sed (POSIX manpage, emphasis mine): An editing command with two addresses shall select the inclusive range from the first pattern space that matches the first address through the next pattern space that