can any one say how to install the slack in ubuntu14.04 and while trying this was the error

Question

ssh: Could not resolve hostname slack-master: Name or service not known
rsync: did not see server greeting
rsync error: error starting client-server protocol (code 5) at main.c(1653) [Receiver=3.1.0]
FATAL[slack-getroles]: 'rsync --links --times -e ssh slack-master::slack/etc/roles.conf /var/cache/slack/_role_list' exited 5 at /usr/lib/slack/slack-getroles line 158.
FATAL[slack]: '/usr/lib/slack/slack-getroles' exited 5 at /usr/sbin/slack line 205.

Answer 1

I suspect, this problem has occured from the time I have installed the anaconda package of python. The following steps helped me to resolve the issue.

Step 1: Restart the machine

Step 2: $ sudo apt-get remove slack

Step 3: Download the latest version of slack from Slack website (Find the latest package here - https://slack.com/): $ wget https://downloads.slack-edge.com/linux_releases/slack-desktop-2.9.0-amd64.deb

Step 4: $ Install the downloaded package using the dpkg utility: sudo dpkg -i slack-desktop-2.9.0-amd64.deb

In step 4, we will witness the following error:

$ sudo dpkg -i slack-desktop-2.9.0-amd64.deb 
(Reading database ... 215272 files and directories currently installed.)
Preparing to unpack slack-desktop-2.9.0-amd64.deb ...
Unpacking slack-desktop (2.9.0) over (2.9.0) ...
dpkg: dependency problems prevent configuration of slack-desktop:
 slack-desktop depends on python; however:
  Package python is not installed.

dpkg: error processing package slack-desktop (--install):
 dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Errors were encountered while processing:
 slack-desktop
$

To fix this problem: in step 5

Step 5: Install the missing dependencies using: sudo apt-get install -f

$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  python python2.7
Suggested packages:
  python-doc python-tk python2.7-doc
The following NEW packages will be installed:
  python python2.7
0 upgraded, 2 newly installed, 0 to remove and 125 not upgraded.
1 not fully installed or removed.
Need to get 361 kB of archives.
After this operation, 1,009 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://in.archive.ubuntu.com/ubuntu xenial-updates/main amd64 python2.7 amd64 2.7.12-1ubuntu0~16.04.1 [224 kB]
Get:2 http://in.archive.ubuntu.com/ubuntu xenial/main amd64 python amd64 2.7.11-1 [137 kB]
Fetched 361 kB in 0s (384 kB/s) 
Selecting previously unselected package python2.7.
(Reading database ... 215272 files and directories currently installed.)
Preparing to unpack .../python2.7_2.7.12-1ubuntu0~16.04.1_amd64.deb ...
Unpacking python2.7 (2.7.12-1ubuntu0~16.04.1) ...
Selecting previously unselected package python.
Preparing to unpack .../python_2.7.11-1_amd64.deb ...
Unpacking python (2.7.11-1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for doc-base (0.10.7) ...
Processing 1 added doc-base file...
Setting up python2.7 (2.7.12-1ubuntu0~16.04.1) ...
Setting up python (2.7.11-1) ...
Setting up slack-desktop (2.9.0) ...
$ 

Answer 2

I assume you're interested in the slack of https://slack.com. Don't install it through sudo apt install slack: this is another package (if you're interested in this other mysterious slack package, run apt show slack).

To install the slack of https://slack.com, follow the instructions on their website. At the moment, a convenient way is sudo snap install slack --classic, perhaps preceded by sudo apt install snap.

(don't forget to sudo apt remove slack...)