AIX commands

to compress content in current directory tar -cvf zip.tar .
to compress content in home directory tar -cvf zip.tar /home
to gzip content gzip scripts.tar
to extract to .tar file  gzip -d scripts.tar.gz or gunzip scripts.tar.gz
to decompress tar file tar -xvf scripts.tar

to check if port is assigned or not 

$ cat /etc/services | grep 6001
#                                26001-26207            # Unassigned

Volume Group 

With LVM, "logical" partitions can span across physical hard drives and can be resized (unlike traditional ext3 "raw" partitions). A physical disk is divided into one or more physical volumes (Pvs), and logical volume groups (VGs) are created by combining PVs as shown in Figure

$ lsvg -o
datavg
rootvg
$ lsvg -l datavg
datavg:
LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT
logdatavg           jfs2log    1       2       2    open/syncd    N/A
webspherelv         jfs2       40      80      2    open/syncd    /usr/IBM/WebSphere
itmlv               jfs2       16      32      2    open/syncd    /IBM/itm
$ df -g /usr/IBM/WebSphere
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on
/dev/webspherelv     10.00      8.10   20%    40540     3% /usr/IBM/WebSphere

refer to link for details https://www.redhat.com/magazine/009jul05/features/lvm2/