On **Android** system you can use **Termux** (**No** root required):  
1. Navigate in Firefox to URL:  
`file:///data/data/org.mozilla.firefox/files/mozilla/`  
2. Choose the link of `***.default` folder of your profile  
3. Choose the `sessionstore.js` file  
4. Copy contet of this file and save it in `sessionstore.js` file on local storage  
5. Run the command in Termux:  
```cat ~/storage/shared/sessionstore.js | sed -n 's@{\"url\":\"@&\n@g; s@\",\"title\"@\n@gp' | sed '/^[:{]\"/d'
```
    to output your tabs urls, or:  
```cat ~/storage/shared/sessionstore.js | sed -n 's@{\"url\":\"@&\n@g; s@\",\"title\"@\n@gp' | sed '/^[:{]\"/d' > ~/storage/shared/sessionstore.txt```  
    to save your tabs urls in file `sessionstore.txt` on your local storage.