# [cScm Daemon](https://csvn.radix.pro/cscm/trunk/doc/cscmd.8.md)
**cscmd** – a daemon for monitoring changes in SCM configuration files.
## Table of Contents
* [Options](#options)
* [Grammar](#grammar)
* [See Also](#see-also)
In order to not load the **cSvn-ui** and **cGit-ui** CGI scripts with unnecessary functionality and speed up
its work, information about the list of repositories is transmitted to it in binary form through
shared memory (see: */dev/shm/csvn.bcf*, */dev/shm/cgit.bcf*).
Binary Config File (**BCF**) format is similar to the simplified implementation of the **COFF**
and is described in the header file [*/usr/include/cscm/bcf.h*](https://csvn.radix.pro/cscm/trunk/cscm/bcf.h).
On startup, the daemon parses the */etc/csvn-ui.rc* or */etc/csvn-ui.rc* configuration files
(depends on **--scm=[svn|git]** option) and stores its binary forms in shared memory. In addition, the binary
form is saved in the daemon's home directory, by default it is the file */var/lib/csvn/csvn.bcf* or
*/var/lib/cgit/cgit.bcf*.
**cscmd(8)** daemon rereads SCM configuration files upon arrival of the **-HUP** signal and, in addition,
can be configured to monitor changes in the configuration files using the `--inotify` option. If the `--inotify`
option is specified, then after editing the file */ets/csvn-ui.rc* or */ets/cgit-ui.rc* and saving it to disk,
the **cscmd** daemon will reread file */etc/csvn-ui.rc* or */etc/cgit-ui.rc* as if it received the **-HUP** signal.
The work of the **cscmd(8)** daemon's can be monitored by the log, which it leaves in the file
*/var/log/csvnd.log* or the file */var/log/cgitd.log* (depends on **--scm=[svn|git]** option). There you can also
observe messages about errors that are detected in */ets/csvn-ui.rc* or */ets/cgit-ui.rc* files, if any.
To start the **cScm** daemon during system boot, can be used the start/stop script */etc/rc.d/rc.csvnd* or
*/etc/rc.d/rc.cgitd*.
## Options
### -h, --help
Display help information.
### -v, --version
Display the version of **cScm** daemon.
### -d, --daemonize
Run in background as a daemon.
### -i, --inotify
Notify about configuration changes. If this option is set then **cscmd(8)** daemon selects changes
made in */etc/csvn-ui.rc* or */etc/cgit-ui.rc* configuration file and reread configuration when changes
is done. Without this option rereading configuration file can be done by sending **-HUP** to the **cscmd(8)**
process.
### -b, --bcf=
Binary config file (depends on **--scm=[svn|git]** option). Default: */var/lib/csvn/csvn.bcf*.
### -c, --config=
Config file (depends on **--scm=[svn|git]** option). Default: */etc/csvn-ui.rc*.
### -l, --log=
Log file (depends on **--scm=[svn|git]** option). Default: */var/log/csvnd.log*.
### -p, --pid=
Log file (depends on **--scm=[svn|git]** option). Default: */var/run/csvnd.pid*.
### -s, --scm=[svn|git]
SCM engine name: **svn** or **git**. Default: **svn**.
### -t, --test
Test the config file and exit.
## Grammar
The grammar of the language describing the **cScm** congfiguration is simple
([**parse.y**](https://csvn.radix.pro/cscm/trunk/cscmd/parse.y)). File */etc/csvn-ui.rc*
allows you to set variable values and create repository lists as named structures.
Any variables can be defined in the */etc/csvn-ui.rc* file, but only variables with
reserved names will be used by the **cSvn** or **cGit** CGI script.
In addition, if a variable already defined at the global level is specified in the
description of a repository, then within this repository this variable will have a local
value. In other words, within the repository, global variables can be overridden.
## See Also
> [**README**](https://csvn.radix.pro/cscm/trunk/README.md)