linux_essentials/logs_cleaner_main.sh at main · satyahbp/linux_essentials · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
#!/bin/bash

# ------------------------------------------
# Initialising varibales, paths, etc.

# sources
SOURCE_PATH=<source_path>
SOURCE_FILE_NAME=<source_file_name>

DESTINATION_PATH=<destination_path>
DESTINATION_FILE_BASE_NAME="${SOURCE_FILE_NAME%.*}"

CURRENT_DATE=$(date +"%Y_%m_%d")
CURRENT_EPOCH=$(date +%s)
EXPIRATION_TIME_IN_DAYS=<number of days for deletion>

EXPIRATION_EPOCH=$(($EXPIRATION_TIME_IN_DAYS * 86400))


# ------------------------------------------


# ------------------------------------------
# Zipping the source file into destination and then truncating the source file

zip -j "${DESTINATION_PATH}/${DESTINATION_FILE_BASE_NAME}_${CURRENT_DATE}.zip" $SOURCE_PATH/$SOURCE_FILE_NAME
truncate -s 1K $SOURCE_PATH/$SOURCE_FILE_NAME

# ------------------------------------------


# -----------------------------------------
# Deleting files older than above mentioned days


# Getting all file names in destination path
ALL_ZIPPED_FILES=$(ls $DESTINATION_PATH)

# Checking age of all files and deleting which are older than Expiration time in days.
for CURRENT_FILE in ${ALL_ZIPPED_FILES[@]}; do
    CURRENT_FILE_AGE_EPOCH=$(($CURRENT_EPOCH - $(stat -c %Y $DESTINATION_PATH/$CURRENT_FILE)))

    if [ "$CURRENT_FILE_AGE_EPOCH" -gt "$EXPIRATION_EPOCH" ]; then
        echo "Deleting: ${CURRENT_FILE}"
        rm $DESTINATION_PATH/$CURRENT_FILE
    else
        echo "${CURRENT_FILE} does not match the delete criteria."

    fi
done


# -----------------------------------------