Synology NAS - Where's my Unzip command gorn ?

I hit a wee snag earlier today, whilst attempting to unpack some IBM software on my NAS.

Being a command-line junkie, I'd SSH'd into the box: -

Synology NAS - From My Mac, Via SSH

Synology NAS - Broke SSH but Telnet saved me

Synology NAS - More SSH Loveliness - Permissions and ACLs

and was attempting to use the unzip command, as per this example: -

unzip ../../IIM18/agent.installer.linux.gtk.x86_64_1.8.5001.20161016_1705.zip

which, alas, returned: -

-sh: unzip: command not found

Thankfully, the Synology forum came to my rescue, with this: -

Unzip?

which led me to the fact that Synology have replaced zip with 7Zip, as per this: -

which 7z

/bin/7z

so I now need to do this: -

7z x ../../IIM18/agent.installer.linux.gtk.x86_64_1.8.5001.20161016_1705.zip 

to unpack my file, and I'm good to go.

Thankfully, they've left tar alone, so I can still do this: -

tar xvf ../../ODM87/Product/DEC_SVR_RU_WIN_32_64_BITS_V8.7_ML.tar

which is nice :-)

For the record, this is what I'm running on the NAS: -

uname -a

Linux DiskStation 3.2.40 #8451 SMP Fri Dec 9 10:49:00 CST 2016 armv7l GNU/Linux synology_armadaxp_ds414

cat /etc/VERSION 

majorversion="6"
minorversion="0"
productversion="6.0.2"
buildphase="hotfix"
buildnumber="8451"
smallfixnumber="7"
builddate="2016/12/20"
buildtime="05:10:39"