chmod 計算
Unix のパーミッションを計算
ブラウザで動作 · アップロード不要
このツールとページ内の説明は、現在は英語のみです。動作は同じで、すべてブラウザ内で実行されます。
| Who | Read | Write | Execute |
|---|---|---|---|
| Owner (u) | |||
| Group (g) | |||
| Others (o) |
Commands
お使いのブラウザはこのツールを動かすには古すぎます。更新するか、最新の Chrome、Edge、Firefox、Safari をお使いください。
- 何も端末から出ません
- サーバーによるサイズ制限なし
- 登録不要・透かしなし
- 無料
How to work out chmod permissions
- Tick the permissions, type an octal number, or type the letters as ls -l shows them.
- Add special bits if you need them.
- Copy the chmod command.
Reading the numbers
| Number | Letters | Meaning |
|---|---|---|
| 7 | rwx | read, write and execute |
| 6 | rw- | read and write |
| 5 | r-x | read and execute |
| 4 | r-- | read only |
| 0 | --- | nothing |
Common choices
- 644 for normal files (only the owner can change them).
- 755 for folders and scripts.
- 600 for private files such as SSH keys and .env files, and 700 for private folders.
- Avoid 777: everyone on the server can change the file.
よくある質問
What do s and t mean in rwsr-xr-x?
s is setuid or setgid: the program runs with the owner's (or group's) rights. t is the sticky bit: in a shared folder, people can delete only their own files. A capital S or T means the bit is set without execute permission.
Is anything sent anywhere?
No. Everything happens in your browser, and the page is blocked from uploading anything.