| bytes | Package bytes implements functions for the manipulation of byte slices. |
| cmd/internal/src | |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| internal/buildcfg | Package buildcfg provides access to the build configuration described by the current environment. |
| os/exec | Package exec runs external commands. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |