Extract rpm package name, version and release using some fancy sed regex

rpm -qa | sed 's/^\(.*\)-\([^-]\{1,\}\)-\([^-]\{1,\}\)$/\1 \2 \3/' | sort | column -t
This command could seem pretty pointless especially when you can get the same result more easily using the rpm builtin queryformat, like: rpm -qa --qf "%{NAME} %{VERSION} %{RELEASE}.%{ARCH}\n" | sort | column -t but nonetheless I've learned that sometimes it can be quite interesting trying to explore alternative ways to accomplish the same task (as Perl folks like to say: There's more than one way to do it!)
Sample Output
[root@docker ~]# rpm -qa | sed 's/^\(.*\)-\([^-]\{1,\}\)-\([^-]\{1,\}\)$/\1 \2 \3/' | sort | column -t
acl                            2.2.51        14.el7.x86_64
aic94xx-firmware               30            6.el7.noarch
alsa-firmware                  1.0.28        2.el7.noarch
alsa-lib                       1.1.6         2.el7.x86_64
alsa-tools-firmware            1.1.0         1.el7.x86_64
atop                           2.3.0         8.el7.x86_64
audit                          2.8.4         4.el7.x86_64
audit-libs                     2.8.4         4.el7.x86_64
audit-libs-python              2.8.4         4.el7.x86_64
authconfig                     6.2.8         30.el7.x86_64
basesystem                     10.0          7.el7.centos.noarch
bash                           4.2.46        31.el7.x86_64
bash-completion                2.1           6.el7.noarch
bc                             1.06.95       13.el7.x86_64
bind-libs                      9.9.4         73.el7_6.x86_64
bind-libs-lite                 9.9.4         73.el7_6.x86_64
bind-license                   9.9.4         73.el7_6.noarch
bind-utils                     9.9.4         73.el7_6.x86_64
binutils                       2.27          34.base.el7.x86_64
[... snip ...]

What Others Think

I think In this example, the rpm command is used with the flag -q to specify it as a query command, -l to listing the documents inside the package, and -p so it knows to question the uninstalled package file Write an Essay For Me - 24HWriteMYEssay.com. The -v flag (verbose) just offers extra statistics (permissions, proprietor, etc.) for the sake of this situation. As we will see, the package deal installs an executable binary known as packagecloud_hello into /usr/local/bin/.
antoniacummins · 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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