| SYD-SYS(1) | General Commands Manual | SYD-SYS(1) |
syd-sys - Lookup syscalls, errnos, ioctls, open flags, and signals by number or regular expression
syd-sys [-heios] [-a arch] number|regex
syd-sys -a list
syd-sys [-uU]
Given a number, syd-sys prints the matching syscall name.
Given a regex, syd-sys prints case-insensitively matching syscall names.
Use -e to query errno(3) numbers.
Use -i to query ioctl(2) requests.
Use -o to query open(2) flags.
Use -s to query signal(7) numbers.
Use -u to list UNIX domain socket inodes and names using netlink(7).
Use -U to list UNIX domain socket inodes and names using proc_net(5).
For both -u and -U, each line is the inode and name separated by a tab. Abstract sockets are prefixed with @ and unnamed sockets are displayed as !unnamed.
| -h | Display help. |
| -a | Specify alternative architecture, such as x86, x86_64 and aarch64. |
| Use list to print the list of libseccomp supported architectures. | |
| -e | Query errno(3) numbers. |
| -i | Query ioctl(2) requests. |
| -o | Query open(2) flags. |
| -s | Query signal(7) numbers. |
| -u | List UNIX domain socket inodes and names using netlink(7). |
| -U | List UNIX domain socket inodes and names using proc_net(5). |
syd(1), syd(2), syd(5), errno(3), ioctl(2), open(2), syscall(2), signal(7), netlink(7)
syd homepage: https://sydbox.exherbo.org/
Maintained by Ali Polatel. Up-to-date sources can be found at https://gitlab.exherbo.org/sydbox/sydbox.git and on Radicle at rad:z38HCnbmcDegA2BMxuPaPRPMdp6wF. Bugs/patches can be submitted to https://gitlab.exherbo.org/groups/sydbox/-/issues. Discuss in #sydbox on Libera Chat or in #sydbox:mailstation.de on Matrix.
| 2026-07-12 |