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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
- 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
- regular expression - Using sed to find and replace complex string . . .
Learn how to use sed with regex for complex string replacements in Unix systems
- 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
- 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
- Understanding sed expression s ^\. \ g - Stack Overflow
First, understanding the sed expression at hand s pattern replacement flags is the a sed command, described in detail in man sed In this case, pattern is a regular expression; replacement is what that pattern gets replaced with when where found; and flags describe details about how that replacement should be done
- 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
- How to use variables in a command in sed? - Stack Overflow
How to use variables in a command in sed? Asked 11 years, 9 months ago Modified 2 years ago Viewed 199k times
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