[Solved] Use apt-get update as a super-user to have synaptic working
As usual I use unpacked KNOPPIX_V8.6.1-2019-10-14-EN.iso and booted with Grub to create a persistent system. In general, I have long been using synaptic to install additional software persistent across multiple reboots.
With the current version, I have run into an issue. I get the notice from synaptic:
I checked the /etc/apt/sources.listE: The value 'stable' is invalid for APT::Default-Release as such a release is not available in the sources
E: _cache->open() failed, please report.
The keyword 'stable' shouldn't be an issue, but is presently. Shall the keywords be replaced by exact words? Like stable=buster, oldstable=stretch, unstable=Sid, oldoldstable=jessie and so on?
[Solved] Use apt-get update as a super-user to have synaptic working
Cisco ASA 5520 Adaptive Security Appliance
$56.75
NetFu Firewall 1U, Intel CPU, 8 x Gigabit, SFP, w/ pfSense, Others, NEW OPTIONS
$677.31
Juniper Networks SRX-210 Secure Services Gateway VPN Firewall
$39.99
Palo Alto PA-220 Security Appliance Firewall - NO Power adapter -
$33.00
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$34.97
Firewalla Purple SE - Cyber Security Firewall with cables and power supply
$200.00
Firewalla: Cyber Security Firewall for Home & Business, Protect Network
$250.00
Ubiquiti Networks UniFi Security Gateway - White (USG-3P)
$49.00
Genuine Fortinet FortiGate 60E-POE Firewall Network Security ATP Bundle 2 years
$263.99
FORTINET FORTIGATE 40F Next GEN Firewall Security Unregistered (FG-40F)-Open Box
$171.99