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| -rwxr-xr-x | lognotify.sh | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/lognotify.sh b/lognotify.sh new file mode 100755 index 0000000..ba14cc3 --- /dev/null +++ b/lognotify.sh @@ -0,0 +1,48 @@ +#!/bin/bash +# +# Copyright 2010 David Vazgenovich Shakaryan <dvshakaryan@gmail.com> +# Distributed under the terms of the GNU General Public License v3 + +if [ $# != 3 ]; then + echo "$0: incorrect number of arguments" >&2 + exit 1 +fi + +IDENTIFIER="$1" +SERVER="$2" +LOGPATH="$3" + +CACHEDIR="${HOME}/.cache/lognotify" + +# Setup cache directory if nonexistent. +if [ ! -d "${CACHEDIR}" ]; then + echo -n "* Creating cache directory... " + mkdir -p "${CACHEDIR}" + echo "Done" +fi + +if [ ! -f "${CACHEDIR}/${IDENTIFIER}" ]; then + echo -n "* Creating cache file for log... " + touch "${CACHEDIR}/${IDENTIFIER}" + echo "Done" +fi + +echo -n "* Determining number of lines in cached log... " +LINES=$(wc -l "${CACHEDIR}/${IDENTIFIER}" | cut -f1 -d' ') +echo "${LINES}" + +echo -n "* Acquiring new lines via SSH... " +if [ "${LINES}" == 0 ]; then + LOGAPPEND=$(ssh ${SERVER} "cat ${LOGPATH}") +else + LOGAPPEND=$(ssh ${SERVER} "cat ${LOGPATH} | sed -e '1,${LINES}d'") +fi +echo "Done" + +if [ -n "${LOGAPPEND}" ]; then + echo "* Number of new lines: $(echo "${LOGAPPEND}" | wc -l)" + echo + echo "${LOGAPPEND}" | tee -a "${CACHEDIR}/${IDENTIFIER}" +else + echo "* No new lines found." +fi |