![]() For instance, the -t gives only process identifiers without a header, making it helpful in writing scripts. Just as with fuser, however, if we’re using vi to edit the file, lsof won’t show it as in use. In this case, we see that the file is opened for reading, with FD = 4r. You can also explicitly specify a directory to start searching from as the first argument to find: find / -name 'filename' will look for 'filename' or all the files that match the regex expression in between the quotes, starting from the root directory. Let’s look at the output when the less command is accessing the file, instead of vi: $ lsof | Find Files Using Locate Command To find an exact match according to pattern you enter, use this -b option and the globbing option as in the following syntax. The FD field can have three parts: file descriptor ( 4 in our case) is the first, a mode character is the second ( u means the file is accessible for reading and writing), and a lock character is the third. If the process has threads, we’ll see their identification number, TID, with the task command. The lsof command returns the process name, the PID, and the user who is running the process. The lsof CommandĬOMMAND PID TID TASKCMD USER FD TYPE DEVICE SIZE/OFF NODE NAME Running the command with the -k option may kill all processes that use the pointed file or directory, so use it with care. However, that may not always be the case. For example, you want to find a file called fio in /root directory, you can type the following command: find /root -name fio. In this case, the last line of the output is the process we’re looking for. If you want to find a file in your Linux system, you can use the find command to search in a given directory and its subdirectories. The response is a list of all processes that are accessing files on the same file system. However, we can try finding the process by analyzing and guessing the output of fuser -cv text.txt. The kernel did its job already, so information on the file is not available. When we run the same command, nothing will be returned because vi opens the file, reads its content to memory, and closes it. Let’s say the same file is being accessed by vi. Let’s give it a try to kill the less process, with SIGKILL, using the PID 24815: $ fuser -k text.txt Running the command with the -k option will kill the process that it finds.
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