SEO + API + Security + Debugging + Performance Command

🔹 Basic Info & Headers (1–15)

1️⃣

curl -I https://example.com

2️⃣

curl -IL https://example.com

3️⃣

curl -v https://example.com

4️⃣

curl -i https://example.com

5️⃣

curl https://example.com

6️⃣

curl -s https://example.com

7️⃣

curl -D - https://example.com

8️⃣

curl -o /dev/null -s -w "%{http_code}\n" https://example.com

9️⃣

curl -o /dev/null -s -w "%{time_total}\n" https://example.com

🔟

curl -o /dev/null -s -w "%{size_download}\n" https://example.com

1️⃣1️⃣

curl -o /dev/null -s -w "%{content_type}\n" https://example.com

1️⃣2️⃣

curl -I http://example.com

1️⃣3️⃣

curl -IL http://example.com

1️⃣4️⃣

curl -k https://example.com

1️⃣5️⃣

curl -L https://example.com

🔹 User-Agent / Bots / Devices (16–30)

1️⃣6️⃣

curl -A "Googlebot" https://example.com

1️⃣7️⃣

curl -A "bingbot" https://example.com

1️⃣8️⃣

curl -A "Mozilla/5.0" https://example.com

1️⃣9️⃣

curl -A "curl/7.88.1" https://example.com

2️⃣0️⃣

curl -A "iPhone" https://example.com

2️⃣1️⃣

curl -A "Android" https://example.com

2️⃣2️⃣

curl -A "PostmanRuntime" https://example.com

2️⃣3️⃣

curl -A "AhrefsBot" https://example.com

2️⃣4️⃣

curl -A "SemrushBot" https://example.com

2️⃣5️⃣

curl -A "facebookexternalhit" https://example.com

2️⃣6️⃣

curl -A "Twitterbot" https://example.com

2️⃣7️⃣

curl -A "LinkedInBot" https://example.com

2️⃣8️⃣

curl -A "WhatsApp" https://example.com

2️⃣9️⃣

curl -A "Slackbot" https://example.com

3️⃣0️⃣

curl -A "TelegramBot" https://example.com

🔹 Methods / API / Forms (31–50)

3️⃣1️⃣

curl -X GET https://example.com/api/users

3️⃣2️⃣

curl -X POST https://example.com/login -d "email=a@a.com&pass=123" 

3️⃣3️⃣

curl -X PUT https://example.com/api/user/1 -d "name=anil" 

3️⃣4️⃣

curl -X DELETE https://example.com/api/user/1

3️⃣5️⃣

curl -X OPTIONS https://example.com

3️⃣6️⃣

curl -X PATCH https://example.com/api/user/1 -d "name=test" 

3️⃣7️⃣

curl -H "Content-Type: application/json" -d '{"a":1}' https://example.com/api

3️⃣8️⃣

curl -H "Accept: application/json" https://example.com/api

3️⃣9️⃣

curl -H "Authorization: Bearer TOKEN" https://example.com/api/me

4️⃣0️⃣

curl -F "file=@test.jpg" https://example.com/upload

4️⃣1️⃣

curl -d "a=1&b=2" https://example.com/form

4️⃣2️⃣

curl -G https://example.com/search --data-urlencode "q=test" 

4️⃣3️⃣

curl --json '{"x":1}' https://example.com/api

4️⃣4️⃣

curl -X TRACE https://example.com

4️⃣5️⃣

curl -X HEAD https://example.com

4️⃣6️⃣

curl -X CONNECT https://example.com

4️⃣7️⃣

curl -X PROPFIND https://example.com

4️⃣8️⃣

curl -X MKCOL https://example.com/test

4️⃣9️⃣

curl -X COPY https://example.com/a

5️⃣0️⃣

curl -X MOVE https://example.com/a

🔹 Cookies / Sessions (51–65)

5️⃣1️⃣

curl -c cookies.txt https://example.com

5️⃣2️⃣

curl -b cookies.txt https://example.com/dashboard

5️⃣3️⃣

curl -b "PHPSESSID=123" https://example.com

5️⃣4️⃣

curl -c cookies.txt -b cookies.txt https://example.com

5️⃣5️⃣

curl -v -b cookies.txt https://example.com

5️⃣6️⃣

curl -I -b cookies.txt https://example.com

5️⃣7️⃣

curl -H "Cookie: a=1; b=2" https://example.com

5️⃣8️⃣

curl --cookie-jar jar.txt https://example.com

5️⃣9️⃣

curl --cookie jar.txt https://example.com

6️⃣0️⃣

curl -b "admin=true" https://example.com

6️⃣1️⃣

curl -b "role=admin" https://example.com/admin

6️⃣2️⃣

curl -b "isLogged=1" https://example.com

6️⃣3️⃣

curl -b "debug=true" https://example.com

6️⃣4️⃣

curl -b "test=1" https://example.com

6️⃣5️⃣

curl -b "session=xyz" https://example.com

🔹 Security / Header Tricks (66–85)

6️⃣6️⃣

curl -H "X-Forwarded-For: 127.0.0.1" https://example.com

6️⃣7️⃣

curl -H "X-Real-IP: 127.0.0.1" https://example.com

6️⃣8️⃣

curl -H "Referer: https://google.com" https://example.com

6️⃣9️⃣

curl -H "Origin: https://evil.com" https://example.com

7️⃣0️⃣

curl -H "Host: admin.example.com" https://example.com

7️⃣1️⃣

curl -H "Accept-Language: en-US" https://example.com

7️⃣2️⃣

curl -H "Cache-Control: no-cache" https://example.com

7️⃣3️⃣

curl -H "Pragma: no-cache" https://example.com

7️⃣4️⃣

curl -H "If-None-Match: test" https://example.com

7️⃣5️⃣

curl -H "If-Modified-Since: Tue, 15 Nov 1994 12:45:26 GMT" https://example.com

7️⃣6️⃣

curl -H "X-Requested-With: XMLHttpRequest" https://example.com

7️⃣7️⃣

curl -H "Upgrade-Insecure-Requests: 1" https://example.com

7️⃣8️⃣

curl -H "Connection: close" https://example.com

7️⃣9️⃣

curl -H "TE: trailers" https://example.com

8️⃣0️⃣

curl -H "Via: 1.1 proxy" https://example.com

8️⃣1️⃣

curl -H "Forwarded: for=127.0.0.1" https://example.com

8️⃣2️⃣

curl -H "X-Api-Key: test" https://example.com

8️⃣3️⃣

curl -H "X-Debug: 1" https://example.com

8️⃣4️⃣

curl -H "X-Internal: true" https://example.com

8️⃣5️⃣

curl -H "X-Test: 123" https://example.com

🔹 Files / Downloads / Range (86–100)

8️⃣6️⃣

curl -O https://example.com/file.pdf

8️⃣7️⃣

curl -o test.pdf https://example.com/file.pdf

8️⃣8️⃣

curl -C - -O https://example.com/big.zip

8️⃣9️⃣

curl -r 0-100 https://example.com/file.pdf

9️⃣0️⃣

curl -I https://example.com/file.pdf

9️⃣1️⃣

curl -H "Range: bytes=0-500" https://example.com/file.pdf

9️⃣2️⃣

curl --limit-rate 100k https://example.com/file.zip

9️⃣3️⃣

curl -T test.txt https://example.com/upload

9️⃣4️⃣

curl -F "file=@test.txt" https://example.com/upload

9️⃣5️⃣

curl -z test.txt https://example.com/file.txt

9️⃣6️⃣

curl --compressed https://example.com

9️⃣7️⃣

curl --http2 https://example.com

9️⃣8️⃣

curl --http1.1 https://example.com

9️⃣9️⃣

curl --tlsv1.2 https://example.com

1️⃣0️⃣0️⃣

curl --cert my.pem https://example.com