gawk commands may be classified as follows:
| Arithmetic Functions | String Functions | Control Flow Statements | Input/Output Processing | Time Functions | Misc. |
| atan2 | gensub | break | close | strftime | delete |
| cos | gsub | continue | fflush | systime | function |
| exp | index | do/while | getline | system | |
| int | length | exit | next | ||
| log | match | for | nextfile | ||
| rand | split | if | |||
| sin | sub | return | printf | ||
| sqrt | substr | sprintf | |||
| srand | tolower | while | |||
| toupper |
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