Install the latest version of Slack on Linux from the Terminal

slack_fedora_install.sh

# Fedora 

# If you need an international version of Slack, use this URL:
# e.g. Korean: 
# https://slack.com/intl/ko-kr/downloads/instructions/fedora

wget -q https://slack.com/downloads/instructions/fedora -O - \
| tr "\t\r\n'" '   "' \
| grep -i -o '<a[^>]\+href[ ]*=[ \t]*"\(ht\|f\)tps\?:[^"]\+"' \
| sed -e 's/^.*"\([^"]\+\)".*$/\1/g' \
| grep 'slack.*rpm' \
| xargs wget -q -O slack-desktop-latest.rpm

sudo yum install $HOME/Downloads/slack-desktop-latest.rpm --yes

slack_ubuntu_install.sh

# Ubuntu

# If you need an international version of Slack, use this URL:
# e.g. Korean: 
# https://slack.com/intl/ko-kr/downloads/instructions/ubuntu

wget -q https://slack.com/downloads/instructions/ubuntu -O - \
| tr "\t\r\n'" '   "' \
| grep -i -o '<a[^>]\+href[ ]*=[ \t]*"\(ht\|f\)tps\?:[^"]\+"' \
| sed -e 's/^.*"\([^"]\+\)".*$/\1/g' \
| grep 'slack-desktop' \
| xargs wget -q -O $HOME/Downloads/slack-desktop-latest.deb

sudo apt install $HOME/Downloads/slack-desktop-latest.deb --yes