# Shell

- [Easy](/solutions/leetcode-solutions/problems/shell/easy.md)
- [#193 Valid Phone Numbers](/solutions/leetcode-solutions/problems/shell/easy/193-valid-phone-numbers.md): https://leetcode.com/problems/valid-phone-numbers/
- [#195 Tenth Line](/solutions/leetcode-solutions/problems/shell/easy/195-tenth-line.md): https://leetcode.com/problems/tenth-line/