libssh2\_knownhost\_writefile(3) libssh2 libssh2\_knownhost\_writefile(3)

# [NAME](#NAME)

libssh2\_knownhost\_writefile - write a collection of known hosts to a file

# [SYNOPSIS](#SYNOPSIS)

```
#include <libssh2.h>
int
libssh2_knownhost_writefile(LIBSSH2_KNOWNHOSTS *hosts,


                            const char *filename, int type);
```

# [DESCRIPTION](#DESCRIPTION)

Writes all the known hosts to the specified file using the specified file format.

*filename* specifies what filename to create

*type* specifies what file type it is, and *LIBSSH2\_KNOWNHOST\_FILE\_OPENSSH* is the only currently supported format.

# [RETURN VALUE](#RETURN_VALUE)

Returns a regular libssh2 error code, where negative values are error codes and 0 indicates success.

# [AVAILABILITY](#AVAILABILITY)

Added in libssh2 1.2

# [SEE ALSO](#SEE_ALSO)

[**libssh2\_knownhost\_readfile(3)**](/man/os/libssh2/libssh2_knownhost_readfile.3) [**libssh2\_knownhost\_add(3)**](/man/os/libssh2/libssh2_knownhost_add.3)

28 May 2009 libssh2

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Document: libssh2_knownhost_writefile(3) from libssh2 1.11.1-r10 (Chainguard OS)
Source: https://github.com/libssh2/libssh2.git