I have already installed cocoapod, but when I hit pod install and the command, I got the error zsh: command not found: pod.
I tried https://qiita.com/lucy/items/48d58e94541841c2b103 but it didn't work.
I tried many other things, but it doesn't help. somebody please.

[~] gem list 19:13:27

* LOCAL GEMS *

activesupport (4.2.10)
bigdecimal (1.2.0)
CFPropertyList (2.3.6, 2.2.8)
claide (1.0.2)
cocoapods (1.3.1)
cocoapods-core (1.3.1)
cocoapods-deintegrate (1.0.1)
cocoapods-downloader (1.1.3)
cocoapods-plugins (1.0.0)
cocoapods-search (1.0.0)
cocoapods-stats (1.0.0)
cocoapods-trunk (1.3.0)
cocoapods-try (1.1.0)
colored2 (3.1.2)
colorize (0.8.1)
concurrent-ruby (1.0.5)
escape (0.0.4)
fourflusher (2.0.1)
fuzzy_match (2.0.4)
gh_inspector (1.0.3)
i18n (0.9.1)
inquirer (0.2.1)
io-console (0.4.2)
json (1.7.7)
libxml-ruby (2.6.0)
minitest (5.10.3, 4.3.2)
molinillo (0.5.7)
nanaimo (0.2.3)
nap (1.1.0)
netrc (0.11.0)
nokogiri (1.5.6)
psych (2.0.0)
rake (0.9.6)
rdoc (4.0.0)
ruby-macho (1.1.0)
sqlite3 (1.3.7)
term-ansicolor (1.6.0)
test-unit (2.0.0.0)
thread_safe (0.3.6)
tins (1.16.3)
tzinfo (1.2.4)
update_xcode_plugins (0.4.0)
xcodeproj (1.5.4)