code-utils/misc/checkFileSyncModified.sh at master · Praqma/code-utils · GitHub

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#!/bin/bash

# This script monitors a list of files for changes and report (exit false)

# if one of the file changes, and not all of them.

# The use case is to keep files in edit-sync, understood as changes in one

# file imposes changes in another file (but the files are not identical, nor are

# the changes.

# Usage:

# run script with list of file as one parameter:

# ./script "file1 file2 file3"

# The script create a SHA checksum of each file first time it runs.

# Next time the script is executed, and one file is changed, the checksum does not match

# and file changed count is incremented. If it at the end does not match the file count

# not all files are changed.

# NOTE: the script is not idempotent - running it a second time after a change is detected

# there is no change (unless you changed the file between running the script)

list=$1

echo "Checking if file have been changed: $list"

echo "If one file is changed, all must be changed"

file_changed_count=0

file_count=0

changed_files_file="changed_file.lst"

rm -rf $changed_files_file

for f in $list;

if [ ! -f $f ]

then

echo "Did not find $f - skipping file"

else

file_count=$(($file_count + 1))

echo "Monitoring file $f for changes"

old_sha=$f.sha1

if [ -f $old_sha ];

then

sha1sum -c $old_sha

exit_value=$?

if [ "$exit_value" -ne "0" ]

then

echo "Monitored file did not match old checksum"

file_changed_count=$(($file_changed_count + 1))

echo $f >> $changed_files_file

# create new checksum for file for next time we run this script

shasum $f > $old_sha

done

if [ "$file_changed_count" -gt 0 ] && [ "$file_count" -ne "$file_changed_count" ]

then

echo "Some files did change - but not all. These file did change:"

cat $changed_files_file

else

echo "OK - no file changed since last time"

code-utils/misc/checkFileSyncModified.sh at master · Praqma/code-utils · GitHub

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