How can I clean /var?

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469M   /var/cache
432M    /var/lib
199M    /var/lib/clamav
196M    /var/log
181M    /var/cache/PackageKit/27
181M    /var/cache/PackageKit
181M    /var/cache/dnf
177M    /var/log/journal/ace121a524ec4bcabcc145f9b69edbdc
177M    /var/log/journal
139M    /var/spool
138M    /var/spool/abrt
117M    /var/lib/rpm
115M    /var/spool/abrt/ccpp-2018-03-07-20:46:09.575431-2374
114M    /var/spool/abrt/ccpp-2018-03-07-20:46:09.575431-2374/coredump
113M    /var/lib/clamav/main.cvd
102M    /var/lib/rpm/Packages
97M /var/cache/PackageKit/27/hawkey
85M /var/cache/PackageKit/27/metadata
61M /var/cache/fedy/jre/jre-8u161-linux-x64.rpm
61M /var/cache/fe

Are you using clamav? If not, get rid of all the clamav stuff. Are you using PackageKit (Gnome Software)? If you are using dnf instead (what you should), delete /var/cache/PackageKit/* and mask (disable) the PackageKit service. You can also delete /var/spool/abrt/ccpp-2018-03-07-20:46:09.575431-2374 and the corresponding coredump. As well as /var/cache/fedy/jre/jre-8u161-linux-x64.rpm.

Also, consider increasing your /var to at least 5 GB. Is there a special reason why you have /var on a separate partition?

Thanks for your advice , but i get confused now because i am not IT guy, what command i should run for those things ? Please help , i just want to make my root and swap have more space so i did seperate on /var , /tmp , hehe

Command: sudo rm -rf /var/cache/PackageKit/*

... and so on for the others. You may want to make yourself familiar with the sudo and rm command (among others). Also, as long as you don't need it and don't have a clear picture of large each partition should be, and don't separate /var and /tmp and maybe not even swap (use swap file on / instead) - that way you actually waste less space (20-30 gb / incl /var is sufficient in most cases). You want a large /home. Keep the rest together.

If you think you don't need your past logs: sudo rm -rf /var/log/journal/*

enter code here

4.0K    /var/account
16K /var/lost+found
144K    /var/log/sssd
4.0K    /var/log/cups
4.0K    /var/log/gdm
4.0K    /var/log/cluster
2.1M    /var/log/audit
4.0K    /var/log/blivet-gui
169M    /var/log/journal
4.0K    /var/log/glusterfs
4.0K    /var/log/chrony
8.0K    /var/log/samba
4.0K    /var/log/httpd
12K /var/log/fedy
4.0K    /var/log/speech-dispatcher
8.0K    /var/log/libvirt
4.8M    /var/log/anaconda
4.0K    /var/log/ppp
187M    /var/log
4.0K    /var/nis
4.0K    /var/www/html
4.0K    /var/www/cgi-bin
12K /var/www
4.0K    /var/adm
4.0K    /var/preserve
44M /var/cache/cups
4.0K    /var/cache/gdm
4.0K    /var/cache/foomatic
4.0K    /var/cache/abr

8.0K   /var/cache/libX11
4.0K    /var/cache/krb5rcache
152K    /var/cache/ibus
181M    /var/cache/dnf
3.9M    /var/cache/man
4.0K    /var/cache/realmd
8.0K    /var/cache/httpd
181M    /var/cache/PackageKit
61M /var/cache/fedy
100K    /var/cache/ldconfig
144K    /var/cache/libvirt
469M    /var/cache
8.0K    /var/db/sudo
12K /var/db
8.0K    /var/tmp/systemd-private-d3e42b24f2b949adaf9010b4e33dec70-fwupd.service-O5l6nV
88K /var/tmp/dnf-popcorn-pht8kc82
8.0K    /var/tmp/systemd-private-d3e42b24f2b949adaf9010b4e33dec70-colord.service-UphBtM
4.0K    /var/tmp/abrt
8.0K    /var/tmp/systemd-private-d3e42b24f2b949adaf9010b4e33dec70-rtkit-daemon

8.0K   /var/tmp/systemd-private-d3e42b24f2b949adaf9010b4e33dec70-chronyd.service-E6IOvC
8.0K    /var/tmp/systemd-private-d3e42b24f2b949adaf9010b4e33dec70-bluetooth.service-Y9chgX
136K    /var/tmp
4.0K    /var/opt
20K /var/lib/AccountsService
8.0K    /var/lib/geoclue
4.0K    /var/lib/hyperv
38M /var/lib/systemd
44K /var/lib/upower
28K /var/lib/iscsi
976K    /var/lib/gdm
4.0K    /var/lib/corosync
52K /var/lib/NetworkManager
48K /var/lib/flatpak
4.0K    /var/lib/dbus
4.0K    /var/lib/dav
4.0K    /var/lib/tpm
12K /var/lib/gssproxy
16K /var/lib/abrt
8.0K    /var/lib/ni
4.0K    /var/lib/fwupdate
4.0K    /var/lib/openvpn
8.0K    /var/lib/

4.0K   /var/yp
4.0K    /var/games
4.0K    /var/gopher
4.0K    /var/ftp
4.0K    /var/empty/sshd
8.0K    /var/empty
12K /var/spool/at
8.0K    /var/spool/cups
4.0K    /var/spool/lpd
138M    /var/spool/abrt
4.0K    /var/spool/mail
4.0K    /var/spool/cron
16K /var/spool/anacron
4.0K    /var/spool/abrt-upload
4.0K    /var/spool/plymouth
139M    /var/spool
4.0K    /var/crash
4.0K    /var/local
8.0K    /var/kerberos/krb5
12K /var/kerberos
1.2G    /var

My /var is seperate with /root , my /var is about 2GB and my /root 55GB