Merge Line Log For Free

The cat Command The most frequently used command to concatenate files in Linux is probably cat, whose name comes from concatenate. In the next sections, we'll dig deeper into the command and the options we can use.

1 Answer If you want lines in file1 and file2 to be sorted in a combined way, then sort-u is way to go. If you just want to combine already pre-sorted file2 , file2 , you can simply concat them e.g. cat file1 file2 >file3.

Method 1: Use the cat command The ">>" operator adds the contents of "file1" and "file2" to the end of the "combined_file", creating it if it doesn't already exist. If you want to add the contents of more than two files, simply add the names of the additional files to the command.

Method 1: Use the cat command The ">>" operator adds the contents of "file1" and "file2" to the end of the "combined_file", creating it if it doesn't already exist. If you want to add the contents of more than two files, simply add the names of the additional files to the command.

A Merging Algorithm Here's an algorithm for merging log files that have multiline entries. First, we need to preprocess the log files. Scan the log file line by line until we reach the end. If a line has a timestamp, save it and print the last saved line to a new file.

A Merging Algorithm Scan the log file line by line until we reach the end. If a line has a timestamp, save it and print the last saved line to a new file. If a line has no timestamp, append it to the saved line, after replacing the new line with a special character. Continue with step #1.

The cat Command The most frequently used command to concatenate files in Linux is probably cat, whose name comes from concatenate. In the next sections, we'll dig deeper into the command and the options we can use.