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unix - sed edit file in-place - Stack Overflow How do I edit a file in a single sed command? Currently, I have to manually stream the edited content into a new file and then rename the new file to the original file name I tried sed -i, but my
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 I'm debugging a shell script and trying to find out the task performed by the following command: sed -i '1,+999d' home org_user data txt I need to change this command as its failing with the foll
Find and replace with sed in directory and sub directories I run this command to find and replace all occurrences of 'apple' with 'orange' in all files in root of my site: find -exec sed -i 's apple orange g' {} \\; But it doesn't go through sub directo
Extract numbers from a string using sed and regular expressions You can extract the last numbers with this: sed -e 's *[^0-9]\([0-9]\+\)[^0-9]*$ \1 ' It is easier to think this backwards: From the end of the string, match zero or more non-digit characters Match (and capture) one or more digit characters Match at least one non-digit character Match all the characters to the start of the string Part 3 of the match is where the "magic" happens, but it also
What does \\1 in sed do? - Stack Overflow To be precise, in s foo bar , only foo is a regular expression, and the rest is other sed syntax Basically, bar is just a string, though some things like and \1 have a special meaning in that string
linux - sed with special characters - Stack Overflow The single quotes around the sed body will prevent the shell from substituting any variables, so the $ on the left-hand side is escaped only to prevent its special regular expression meaning
Boolean OR in sed regex - Stack Overflow sed uses basic regular expressions by default, enabling use of extended regular expressions is implementation dependent, e g with BSD sed you use the -E switch, GNU sed has it documented as -r, but -E works as well
bash - Append text to file using sed - Stack Overflow How can I write text to a file using sed? More specifically I would it add null variables to my blank text file that was created using touch The syntax of sed is very confusing to me