---
name: "syd-x"
section: "1"
platform: "linux"
package: "syd"
version: "3.59.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/syd-x"
---

# syd-x(1)

Check executability of files, list executables of processes

## NAME

**syd-x** - Check executability of files, list executables of processes

## SYNOPSIS

**syd-x** *\[-hcv\]* *\[-l pid...\]* *\[files...\]*

## DESCRIPTION

**syd-x** checks executability of the given files or lists executables of the given processes. The file executability check uses the [*execveat*(2)](/execveat/2.md) system call with the flag "AT\_EXECVE\_CHECK" on Linux\>=6.14 and falls back to the [*faccessat*(2)](/faccessat/2.md) system call with the flag "X\_OK" on older Linux.  If the *-l* option is specified, list mode is activated: all following arguments are interpreted as process IDs, not files. In list mode, executable file listing is done using the "PROCMAP\_QUERY" [*ioctl*(2)](/ioctl/2.md) request on Linux\>=6.11 and falls back to parsing the [*proc\_pid\_maps*(5)](/proc_pid_maps/5.md) file textually on older Linux.

## OPTIONS

| | |
| --- | --- |
| **-h** | Display help. |
| **-c** | Exit with success if the "AT\_EXECVE\_CHECK" flag is supported. |
| **-l** *pid* | Specify a process ID to list the executables of, may be repeated. |
| **-v** | Print file check status information on standard error. |

## EXIT STATUS

**syd-x** exits with 0 on success or with the [*errno*(3)](/errno/3.md) number on failure.

## SEE ALSO

[*syd*(1)](/syd/1.md), [*syd*(2)](/syd/2.md), [*syd*(5)](/syd/5.md)

- •

  **syd** homepage: https://sydbox.exherbo.org/

- •

  Executability check: https://docs.kernel.org/next/userspace-api/check\_exec.html

## AUTHORS

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.