Redhat – How to find all files of a specific type in RHEL on the command line

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I am looking for files of type .flv, .avi, etc

I would like to see a list of all the files (on my server) of those file types (I don't mind doing it one by one, i.e. seeing all the files of .flv, then all the files of .avi).

Then, once I identify the ones I want to move, how do I copy several files that are scattered all over the filesystem to a specific folder?

Best Answer

There are several ways to search for files on GNU/Linux systems. The two main ways are locate and find:

locate uses a database of files known in the whole system to find documents. It is very useful but requires to keep this database up-to-date (with updatedb), which can take a long time;
find searches for files in a given directory. It is usually slower than locate (it has no persistent database) but is more fine-tuned.

So, if you need to find all files on your system that match your criteria, you can use locate:

$ locate --regex "avi|flv" | grep '\.\(avi\|flv\)$'

whereas if you're searching in a specific directory and want to make sure to have no cache delay effect, you can use find:

$ find /path/to/your/directory -regex '.*\.\(avi\|flv\)'

Now, to copy these files to a specific folder:

$ locate --regex "avi|flv" | grep '\.\(avi\|flv\)$' | xargs cp /path/to/specific/folder

$ find /path/to/your/directory -regex '.*\.\(avi\|flv\)' -exec cp {} /path/to/specific/folder \;

Related Solutions

Linux – How to Find All Files and Directories Writable by a Specific User

Use the 'find' command if you have findutils version 4.3.0 or greater installed:

For all files under the current directory that are writable by the current user:

find . -writable

For all files under the current directory that are not writable by the current user:

find . ! -writable

According to the man page:

This test makes use of the access(2) system call, and so can be fooled by NFS servers which do UID mapping (or root-squashing), since many systems implement access(2) in the client’s kernel and so cannot make use of the UID mapping information held on the server.

Centos – How to check from the command line if a reboot is required on RHEL or CentOS

https://access.redhat.com/discussions/3106621#comment-1196821

Don't forget that you might need to reboot because of core library updates, at least if it is glibc. (And also, services may need to be restarted after updates).

If you install the yum-utils package, you can use a command called needs-restarting.

You can use it both for checking if a full reboot is required because of kernel or core libraries updates (using the -r option), or what services need to be restarted (using the -s option).

needs-restarting -r returns 0 if reboot is not needed, and 1 if it is, so it is perfect to use in a script.

An example:

root@server1:~> needs-restarting  -r ; echo $?
Core libraries or services have been updated:
  openssl-libs -> 1:1.0.1e-60.el7_3.1
  systemd -> 219-30.el7_3.9

Reboot is required to ensure that your system benefits from these updates.

More information:
https://access.redhat.com/solutions/27943
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Best Answer

Related Solutions

Linux – How to Find All Files and Directories Writable by a Specific User

Centos – How to check from the command line if a reboot is required on RHEL or CentOS

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