.\" generated with Ronn/v0.7.3
.\" http://github.com/rtomayko/ronn/tree/0.7.3
.
.TH "WATCHEXEC" "1" "October 2016" "" ""
.
.SH "NAME"
\fBwatchexec\fR \- execute commands when watched files change
.
.SH "SYNOPSIS"
watchexec [\fB\-\-watch\fR | \fB\-w\fR \fIpath\fR] [\fB\-\-exts\fR | \fB\-e\fR \fIextensions\fR]\.\.\. [\fB\-\-filter\fR | \fB\-f\fR \fIpattern\fR]\.\.\. [\fB\-\-ignore\fR | \fB\-i\fR \fIpattern\fR]\.\.\. [\fB\-\-restart\fR | \fB\-r\fR] [\fB\-\-clear\fR | \fB\-c\fR] [\fB\-\-postpone\fR | \fB\-p\fR] [\fB\-\-force\-poll\fR \fIinterval\fR] [\fB\-\-debug\fR | \fB\-d\fR] [\fB\-\-no\-vcs\-ignore\fR] \fIcommand\fR [\fIargument\fR\.\.\.]
.
.SH "DESCRIPTION"
Recursively monitors directories for changes, executing the command when a filesystem change (add/modify/delete) is detected\. By default, watchexec uses efficient kernel\-level mechanisms to watch for changes\.
.
.P
At startup, the specified \fIcommand\fR (passing any supplied \fIargument\fRs) is run once, and watchexec begins monitoring for changes\.
.
.SH "OPTIONS"
.
.TP
\fIcommand\fR
Command to run when watched files are modified, and at startup, unless \fB\-\-postpone\fR is specified\. All \fIargument\fRs are passed to \fIcommand\fR\.
.
.TP
\fB\-w\fR, \fB\-\-watch\fR \fIpath\fR
Specifies the path to watch\. This argument can be specified multiple times, with all paths being watched simultaneously\. Defaults to current directory\.
.
.TP
\fB\-e\fR, \fB\-\-exts\fR \fIextensions\fR
Comma\-separated list of file extensions to filter by\. Leading dots are allowed (\.rs) are allowed\. (This is a shorthand for \fB\-f\fR)\.
.
.TP
\fB\-f\fR, \fB\-\-filter\fR \fIpattern\fR
Ignores modifications from paths that do not match \fIpattern\fR\. This option can be specified multiple times, where a match on any given pattern causes the path to trigger \fIcommand\fR\.
.
.TP
\fB\-i\fR, \fB\-\-ignore\fR \fIpattern\fR
Ignores modifications from paths that match \fIpattern\fR\. This option can be specified multiple times, and a match on any pattern causes the path to be ignored\.
.
.TP
\fB\-r\fR, \fB\-\-restart\fR
Sends SIGTERM to the child process if it is still running when subsequent file modifications are detected, then waits for the child to exit\.
.
.TP
\fB\-c\fR, \fB\-\-clear\fR
Clears the screen before executing \fIcommand\fR\.
.
.TP
\fB\-p\fR, \fB\-\-postpone\fR
Postpone execution of \fIcommand\fR until the first file modification is detected\.
.
.TP
\fB\-d\fR, \fB\-\-debug\fR
Prints diagnostic messages to STDERR
.
.TP
\fB\-\-force\-poll\fR \fIinterval\fR
When watching directories, poll for changes every \fIinterval\fR ms instead of using system\-specific notification mechanisms (such as inotify)\. This is useful when you are monitoring NFS shares\.
.
.TP
\fB\-\-no\-vcs\-ignore\fR
Skip loading of version control system (VCS) ignore files\. By default, watchexec loads \.gitignore files in the current directory (or parent directories) and uses them to populate the ignore list\.
.
.SH "ENVIRONMENT"
Processes started by watchexec have the \fB$WATCHEXEC_UPDATED_PATH\fR environment variable set to the path of the first modification observed\. In addition, the \fB$WATCHEXEC_COMMON_PATH\fR environment variable is set to the common path of all observed modifications\.
.
.SH "EXAMPLES"
Rebuild a project when source files change:
.
.IP "" 4
.
.nf

$ watchexec make
.
.fi
.
.IP "" 0
.
.P
Watch all HTML, CSS, and JavaScript files for changes:
.
.IP "" 4
.
.nf

$ watchexec \-e html,css,js make
.
.fi
.
.IP "" 0
.
.P
Run tests when source files change, clearing the screen each time:
.
.IP "" 4
.
.nf

$ watchexec \-c make test
.
.fi
.
.IP "" 0
.
.P
Launch and restart a node\.js server
.
.IP "" 4
.
.nf

$ watchexec \-r node app\.js
.
.fi
.
.IP "" 0