How to use the lsof command to troubleshoot Linux
WebDec 9, 2022 · The lsof utility is a robust interface for the information inside the /proc virtual filesystem. For example, suppose you need to know what process is using a particular directory: $ lsof /run. COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME. systemd 1 root 31 u FIFO 0,24 0t0 19314 /run/initctl.
lsof Command in Linux {14 Practical Examples} - phoenixNAP
WebAug 4, 2022 · Additionally, combining lsof with the -R flag adds the Parent Process Identification Number (PPID) to the output. To get PPID info for a specific PID, execute: sudo lsof -p [PID] -R. For example, to get the PPID for the 635 PID, type: sudo lsof -p 635 -R
bash - How to access the PID from an lsof. - Stack Overflow
WebSomething like: #!/bin/bash --. x=`lsof -Fp -i:1025`. kill -9 ${x##p} Should do it. The 3rd line runs lsof using the -F option to get just the pid, with a leading p. The next line drops the leading p from the output of lsof and uses the result as the pid in a kill command.
lsof(8) - Linux manual page - man7.org
WebTo list all open files, use: lsof To list all open Internet, x.25 (HP-UX), and UNIX domain files, use: lsof -i -U To list all open IPv4 network files in use by the process whose PID is 1234, use: lsof -i 4 -a -p 1234 Presuming the UNIX dialect supports IPv6, to list only open IPv6 network files, use: lsof -i 6 To list all files using any ...
lsof Command in Linux: 7 Practical Examples
WebJul 29, 2022 · If you know the process id, you can use the -p option of the lsof command to find the files opened by it. lsof -p <pid> You can specify multiple process ids as well. lsof -p pid1, pid2, pid3 5. List all files opened by a command. This is specially helpful in debugging.
How to Use the Linux lsof Command - How-To Geek
WebDec 4, 2023 · PID: Process Identification number of the process that opened the file. TID: Task (thread) Identification number. A blank column means it is not a task; it is a process. User: User ID or name of the user to whom the process belongs, or the user ID or login of the person that owns the directory in /proc where lsof finds information about the ...
Why isn't "lsof" telling me the PID of the process that's running?
WebNov 12, 2016 · To find out which PID is using a particular port: $ lsof -t -i :9050 The commands you've indicated are correct, so you might want to confirm whether or not lsof and netstat are actually working by doing a more generic command as a test, for example: $ lsof -i If that still doesn't return anything then you'll know the problem not isolated.
How to Use lsof in Linux (With a Practical Example) - How-To Geek
WebAug 12, 2021 · We could also anticipate that lsof has a header line that contains PID and this text will be passed onto kill as well. Whilst it will not create an issue, a better overall command would have read lsof | grep "workspace" | grep -v "PID" | awk '{print $2}' | xargs -I{} kill -9 {}, or some other way of filtering the first line altogether.
Tutorial - lsof
Web$ lsof -p15616 COMMAND PID USER FD TYPE DEVICE SIZE/OFF INODE NAME ... telnetd 15616 root 0u inet 0x05a93400 0t5641 TCP cloud.cc.purdue.edu:telnet->lsof.itap.purdue.edu:3369 ... telnetd 15616 root 3u VCHR 25, 0 0t5493 103 /dev/ptc/0 Here the key is /dev/ptc/0.
Linux lsof command explained with 12 practical examples
WebApr 4, 2022 · Suppose you know the pid of the specific process you can search the open file list based on pid using -p option along with the command trailing with pid value. You need to run the command as specified in the example given below. # lsof -p 82. Specific Port Running Process.
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