Thursday, 2 June 2016

10 Example of lsof commands in UNIX and Linux

It's been a long time I have written anything on UNIX or Linux, but today I'll talk about the lsof command, a utility command every system admin and developer love. The lsof command stands for list open file descriptors and as the name suggest, it is used to find open files by process. Since almost everything in UNIX are file, you can use lsof command to find an open regular file, a directory, a symbolic link, a block special file, a NFS mounted file, a socket stream, a shared library, a character special file, a regular pipe, a named pipe, an internet socket, a UNIX domain socket and many others. It's an incredibly useful tool to do debugging and troubleshooting in UNIX and Linux environment. Since most of the production system runs on the UNIX-based operating system, knowledge of this tool become even more important.
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