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hp9390/onchange.sh

Forked from senko/onchange.sh
Created July 15, 2017 21:35
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  1. @senko senko created this gist Aug 18, 2011.
    51 changes: 51 additions & 0 deletions onchange.sh
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,51 @@
    #!/bin/bash
    #
    # Watch current directory (recursively) for file changes, and execute
    # a command when a file or directory is created, modified or deleted.
    #
    # Written by: Senko Rasic <[email protected]>
    #
    # Requires Linux, bash and inotifywait (from inotify-tools package).
    #
    # To avoid executing the command multiple times when a sequence of
    # events happen, the script waits one second after the change - if
    # more changes happen, the timeout is extended by a second again.
    #
    # Installation:
    # chmod a+rx onchange.sh
    # sudo cp onchange.sh /usr/local/bin
    #
    # Example use - rsync local changes to the remote server:
    #
    # onchange.sh rsync -avt . host:/remote/dir
    #
    # Released to Public Domain. Use it as you like.
    #

    EVENTS="CREATE,CLOSE_WRITE,DELETE,MODIFY,MOVED_FROM,MOVED_TO"

    if [ -z "$1" ]; then
    echo "Usage: $0 cmd ..."
    exit -1;
    fi

    inotifywait -e "$EVENTS" -m -r --format '%:e %f' . | (
    WAITING="";
    while true; do
    LINE="";
    read -t 1 LINE;
    if test -z "$LINE"; then
    if test ! -z "$WAITING"; then
    echo "CHANGE";
    WAITING="";
    fi;
    else
    WAITING=1;
    fi;
    done) | (
    while true; do
    read TMP;
    echo $@
    $@
    done
    )