Lycolog

which [[
zsh: bad pattern: [[
which [
[: shell built-in command
which test
test: shell built-in command

if [[ $var = "条件" ]]; then
    # 処理
elif [[ $var -eq 0 ]]; then
    # 処理
else
    # 処理
fi

if [[ $var1 = "条件1" ]] && [[ $var2 = "条件2" ]]; then
    # 処理
fi

if [[ $var1 = "条件1" ]] || [[ $var2 = "条件2" ]];
    # 処理
fi

# 条件1の$?が0なら条件2が走る
[[ $var1 = "条件1" ]] && [[ $var2 = "条件2" ]]
# 条件1の$?を無視して条件2が走る
[[ $var1 = "条件1" ]] || [[ test $var2 = "条件2" ]]

127.0.0.1 grafana.test

sudo apt update
sudo apt install -y nginx mariadb-server

sudo apt-get install -y apt-transport-https software-properties-common wget
sudo wget -q -O /usr/share/keyrings/grafana.key https://apt.grafana.com/gpg.key
echo "deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list
sudo apt-get update
sudo apt-get install grafana

cat <<'EOF' | sudo tee /etc/nginx/conf.d/granafa.conf
map $http_upgrade $connection_upgrade {
  default upgrade;
  '' close;
}

upstream grafana {
  server localhost:4000;
}

server {
  listen       80;
  server_name  grafana.test;
  access_log   /var/log/nginx/grafana.access.log;
  error_log    /var/log/nginx/grafana.error.log;


  location / {
    proxy_set_header Host $http_host;
    proxy_pass  http://grafana;
  }

  location /api/live/ {
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
    proxy_set_header Host $http_host;
    proxy_pass http://grafana;
  }
}
EOF

sudo service nginx start

sudo service mysql start
sudo mysql
CREATE USER 'id'@'%' IDENTIFIED BY 'pw';
GRANT ALL PRIVILEGES ON *.* TO 'id'@'%' WITH GRANT OPTION;
quit

# The http port  to use
http_port = 4000

# The public facing domain name used to access grafana from a browser
domain = grafana.test

#!/bin/bash

textList=(YWFhYWEK LWFhYQogICAtIOOBguOBguOBguOBgg== LWFhYQogICAtIOOBguOBguOBguOBgg==)

for text in "${textList[@]}"
do
  echo ${text}
done

YWFhYWEK
LWFhYQogICAtIOOBguOBguOBguOBgg==
LWFhYQogICAtIOOBguOBguOBguOBgg==

#!/bin/bash

textList=(YWFhYWEK LWFhYQogICAtIOOBguOBguOBguOBgg== LWFhYQogICAtIOOBguOBguOBguOBgg==)

for text in "${textList[@]}"
do
  pure=$(echo ${text} | base64 -d)
  echo "$pure"
done

aaaaa
-aaa
   - ああああ
-aaa
   - ああああ

#!/bin/bash

# .と..は除外
# 最後にxargsを入れておくと改行が飛ぶ
results=($(ls -1a | grep -vP "^\.+$" | xargs))
for item in "${results[@]}"
do
    echo "$item";
done

#!/bin/bash
IFS=$'\n'

text=$(cat <<'EOF'
aa bb
a b c
EOF
)
textList=($(echo "$text"))

for text in "${textList[@]}"
do
  echo "${text}"
done

aa bb
a b c

patch -p1 < diff.patch

--- a/path/to/file
+++ b/path/to/file

cat <<EOF | head -3 | tail -2
a
b
c
d
e
EOF

b
c