64

I'm using the following CentOS:

$ cat /etc/centos-release 
CentOS Linux release 7.0.1406 (Core)

The commands nmap, netstat and lsof are not found on CentOS7. Why?

$ type -a nmap
bash: type: nmap: not found

$ type -a netstat
bash: type: netstat: not found

$ type -a lsof   
bash: type: lsof: not found

What should I do to make them work?

|improve this question
59

The package net-tools was deprecated in CentOS7 in favour of the iproute2 suite. You may either install it manually or check out this blogpost for replacement commands:

EDIT

Here is the URL to Red Hat's Bugzilla for RHEL7 that covers the deprecation of netstat in more detail: https://bugzilla.redhat.com/show_bug.cgi?id=1119297

Excerpt

As stated before, net-tools are deprecated thus shouldn't be used unless necessary. Behaviour in RHEL 7 is the same as in Fedora - net-tools is missing from minimal install, but is in @base (~= @standard in Fedora) which is installed in all non-minimal configurations.

There are also other tickets that deal with this such as IDs 682308 and 687920. Note that they are assigned to the Fedora project and are quite old.

|improve this answer
  • 3
    lsof is not listed in your link of substitutions – mist Jan 4 '15 at 0:01
  • It would be a lot more useful if you put the substitution of lsof directly in your answer – ericn Nov 16 '15 at 2:50
  • 3
    I don't think that lsof was deprecated. It's just not installed by default. You can get it with yum install lsof. – Dan Keder Nov 18 '15 at 16:01
30

just do:

yum install net-tools
|improve this answer
  • 9
    It only took a few minutes for me to determine that netstat -plnt was replaced by ss -plnt using this link from @DanKeder's answer above. I think we should first try to make the distribution's recommended solutions work instead of reverting to deprecated approaches. – CodeMed May 16 '17 at 19:43
12

Whenever you cannot find executables on a Red Hat based distro and you know their names, you should do 1 of the following 2 things.

Use repoquery

You can search the YUM repositories that are available to your system by using the command repoquery. If it isn't installed, then do a yum install yum-utils.

$ repoquery -qf */nmap
nmap-2:6.40-4.el7.x86_64

From here you can see which packages have an executable with those names. Here's all of them at once.

$ repoquery -qf */netstat */lsof */nmap
net-tools-0:2.0-0.17.20131004git.el7.x86_64
ctdb-tests-0:2.5.1-2.el7.x86_64
lsof-0:4.87-4.el7.x86_64
nmap-2:6.40-4.el7.x86_64
ctdb-tests-0:2.5.1-2.el7.x86_64

Now just do a sudo yum install lsof or sudo yum install nmap to install these missing packages.

Use yum search

You can also do a similar search using yum search <executable>.

$ yum search netstat     
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.advancedhosters.com
 * extras: mirror.cisp.com
 * updates: centos-mirror.jchost.net
================================================================== Matched: netstat ==================================================================
dstat.noarch : Versatile resource statistics tool
net-snmp.x86_64 : A collection of SNMP protocol tools and libraries
net-tools.x86_64 : Basic networking tools

With this approach you'll need to do a bit of digging to confirm that the resulting packages include the executable you're looking for. I typically look in there lit of files for what I want, but for that you'll have to use repoquery.

$ repoquery -ql net-tools.x86_64  | grep netstat
/bin/netstat
/usr/share/man/de/man8/netstat.8.gz
/usr/share/man/fr/man8/netstat.8.gz
/usr/share/man/man8/netstat.8.gz
/usr/share/man/pt/man8/netstat.8.gz

So using my first approach saves you the extra steps.

netstat's deprecation

Apparently in CentOS 7 netstat, which is part of the package net-tools has been officially deprecated, so you should be using ss (part of the package iproute2), going forward.

|improve this answer
  • 1
    +1 for the repoquery and yum search commands. – fduff Apr 8 '16 at 11:52
4

Upvoted slm's answer, just making it easier to find the info I used. I wanted to do:

netstat -nlp | grep httpd

Instead, on CentOS 7 I just did:

ss -nlp | grep httpd

Which works, didn't even have to install it on CentOS 7 minimal.

Do "man ss" for usage details.

|improve this answer
2

It seems that you simply don't have these tools installed. On CentOS, you should be able to install them easily with yum. Try this:

$ yum install nmap netstat
|improve this answer
  • 1
    Actually, this seems like a fairly valid answer. But, for the record, it does not take much time nor work to get 50 rep; if you really feel something should be posted as a comment, just wait until you can actually post it as one. (it won't take long) – HalosGhost Jul 23 '14 at 19:17
  • 9
    Also note, netstat has been deprecated in favor of ss. Doubt it'll go away any time soon, but just fyi. I'd bet that ss is installed already. – Patrick Jul 23 '14 at 19:52
  • @HalosGhost: It may take substantially longer than that, and you have to ask or answer some questions for it as well. – Guido van Steen Jul 23 '14 at 21:14
  • 1
    OP specified CentOS 7. netstat is not a valid package in that distribution. – David Newcomb Dec 9 '14 at 16:02

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.