I have a situation where I want a bash script to replace an entire line in a file. The line number is always the same, so that can be a hard-coded variable. I’m not trying to replace some sub-string in that line, I just want to replace that line entirely with a new line. Are … Read more
I have a text file with the following format. The first line is the “KEY” and the second line is the “VALUE”. KEY 4048:1736 string 3 KEY 0:1772 string 1 KEY 4192:1349 string 1 KEY 7329:2407 string 2 KEY 0:1774 string 1 I need the value in the same line as of the key. So … Read more
I have a script file which I need to modify with another script to insert a text at the 8th line. String to insert: Project_Name=sowstest, into a file called start. I tried to use awk and sed, but my command is getting garbled. 11 Answers 11
I want to remove some n lines from the end of a file. Can this be done using sed? For example, to remove lines from 2 to 4, I can use $ sed ‘2,4d’ file But I don’t know the line numbers. I can delete the last line using $sed $d file but I want … Read more
Suppose I have a file with lines aaa=bbb Now I would like to replace them with: aaa=xxx I can do that as follows: sed “s/aaa=bbb/aaa=xxx/g” Now I have a file with a few lines as follows: aaa=bbb aaa=ccc aaa=ddd aaa=[something else] How can I replace all this lines aaa=[something] with aaa=xxx using sed? 6 Answers … Read more
I have a large file A (consisting of emails), one line for each mail. I also have another file B that contains another set of mails. Which command would I use to remove all the addresses that appear in file B from the file A. So, if file A contained: A B C and file … Read more
I’d like edit a file with sed on OS X. I’m using the following command: sed ‘s/oldword/newword/’ file.txt The output is sent to the terminal. file.txt is not modified. The changes are saved to file2.txt with this command: sed ‘s/oldword/newword/’ file1.txt > file2.txt However I don’t want another file. I just want to edit file1.txt. … Read more
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions about general computing hardware and software on Stack Overflow. You can edit the question so it’s on-topic for Stack Overflow. Closed 1 year ago. Improve this question I’m trying to use sed -i -e “s/.*seb.*/ \”$ftp_login_template\”https://stackoverflow.com/” … Read more
I need to add the following line to the end of a config file: include “/configs/projectname.conf” to a file called lighttpd.conf I am looking into using sed to do this, but I can’t work out how. How would I only insert it if the line doesn’t already exist? 22 Answers 22
I’m trying to replace a string in a Makefile on Mac OS X for cross-compiling to iOS. The string has embedded double quotes. The command is: sed -i “” ‘s|”iphoneos-cross”,”llvm-gcc:-O3|”iphoneos-cross”,”clang:-Os|g’ Configure And the error is: sed: RE error: illegal byte sequence I’ve tried escaping the double quotes, commas, dashes, and colons with no joy. For … Read more
