WebApr 7, 2024 · ChatGPT is a free-to-use AI chatbot product developed by OpenAI. ChatGPT is built on the structure of GPT-4. GPT stands for generative pre-trained transformer; this indicates it is a large language... WebJan 23, 2014 · If you want to really delete the first 42 lines from the original file then you can make sed make the change inplace with the -i option sed -i 1,42d dump.sql Share Improve …
sed - How do I delete the first n lines and last line of a file using ...
WebNov 17, 2024 · 1. Delete first-line or header line The d option in the sed command is used to delete a line. The syntax for deleting a line is: sed 'Nd' file Here N indicates Nth line in a file. In the following example, the sed command removes the first line in a file. sed '1d' file Output: unix fedora debian ubuntu 2. WebFeb 1, 2024 · You have to delete specific lines from a text file in Linux terminal. Using commands like rm deletes the entire file and you don't want that here. You can use a text … garforth academy term dates 2023
Delete last line from the file - Unix & Linux Stack Exchange
WebNov 19, 2024 · To delete the first line of a file, you can use the following command: sed -i ‘1d’ file.txt This will delete the first line of the file “file.txt”. If you press the Escape (Esc) key, the input line will be cleared. When you press Ctrl … sed is a common text processing utility in the Linux command-line. Removing the first line from an input file using the sedcommand is pretty straightforward. Let’s see how to solve the problem with sed: The sed command in the example above isn’t hard to understand. The parameter ‘1d’ tells the sed command to apply … See more When we work with the Linux command-line, we often need to process text files. In this tutorial, we’ll address different ways to remove the first line from an input file. Also, we’ll discuss the performance of those approaches. See more Let’s first create an example text file to process. We’ll go with a CSV file for our use case since these often contain column names in the first line. … See more Usually, we use the “tail -n x file” command to get the last x lines from an input file. If we prepend a “+” sign to the “x“, the “tail -n +x file” command will print starting with the xth line until the … See more awk is another powerful Linux command-line text processing tool. A short awkone-liner can solve our problem: The awk command above … See more WebAug 5, 2011 · One-liners in reverse order of length, portable unless noted. sed (needs GNU sed for -i ): sed -i 1d file ed (needs e.g. bash for $'...' expansion and here string): ed file <<< $'1d\nw\nq' awk: awk NR\>1 infile > outfile tail: tail -n +2 infile > outfile read + cat: (read x; cat > outfile) < infile bash built-ins: black pfister bathroom faucet