File size: 4,128 Bytes
6225c63 | 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 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | #!/bin/bash
set -euo pipefail
usage() {
echo "Usage: $0 <tar_root_dir> <max_processes> <delete_tar_file>"
echo " tar_root_dir Root directory to recursively search for .tar files"
echo " max_processes Number of parallel decompression processes, must be a positive integer"
echo " delete_tar_file Whether to delete tar files after decompression: 0=Keep 1=Delete"
}
if [ "$#" -ne 3 ]; then
usage
exit 1
fi
TAR_ROOT_DIR="$1"
MAX_PROCESSES="$2"
DELETE_TAR_FILE="$3"
if [ ! -d "${TAR_ROOT_DIR}" ]; then
echo "Error: tar_root_dir does not exist or is not a directory: ${TAR_ROOT_DIR}" >&2
exit 1
fi
if ! [[ "${MAX_PROCESSES}" =~ ^[1-9][0-9]*$ ]]; then
echo "Error: max_processes must be a positive integer: ${MAX_PROCESSES}" >&2
exit 1
fi
if ! [[ "${DELETE_TAR_FILE}" =~ ^[01]$ ]]; then
echo "Error: delete_tar_file must be 0 or 1: ${DELETE_TAR_FILE}" >&2
exit 1
fi
# Define global statistical variables
total_tar_num=0
finished_tar_num=0
fail_tar_num=0
# ===================== Core Decompression Function =====================
unpack_tar() {
local tar_file="$1"
local tar_dir=$(dirname "${tar_file}")
local tar_name=$(basename "${tar_file}")
# Core logic: cd to the directory where the tar package is located to perform decompression and ensure correct path restoration
cd "${tar_dir}" && tar xvf "${tar_name}"
local unpack_status=$?
if [ ${unpack_status} -eq 0 ]; then
# Count +1 for successful decompression
finished_tar_num=$((finished_tar_num+1))
local progress_percent=$(( finished_tar_num * 100 / total_tar_num ))
echo -e "\rDecompression progress: [${finished_tar_num}/${total_tar_num}] ${progress_percent}% | Success: ${tar_file}"
# Delete tar package after successful decompression if configured
if [ ${DELETE_TAR_FILE} -eq 1 ]; then
rm -f "${tar_file}"
fi
else
# Count +1 for failed decompression
fail_tar_num=$((fail_tar_num+1))
echo -e "\nDecompression failed: ${tar_file}"
fi
}
# ===================== Step 1: Recursively find all tar packages and pre-count =====================
echo -e "Start recursively searching for all .tar files under [${TAR_ROOT_DIR}]..."
# Recursively find all .tar files, sort by path, compatible with all path formats
tar_files=()
while IFS= read -r file; do
tar_files+=("$file")
done < <(find "${TAR_ROOT_DIR}" -type f -name "*.tar" | sort)
# Count total number
total_tar_num=${#tar_files[@]}
if [ ${total_tar_num} -eq 0 ]; then
echo -e "No .tar files found, script exit!"
exit 0
fi
echo -e "Search completed, total [${total_tar_num}] tar files found"
echo -e "Start multi-process parallel decompression, process count: ${MAX_PROCESSES} | Delete tar files after decompression: $( [ ${DELETE_TAR_FILE} -eq 1 ] && echo "Yes" || echo "No" )"
echo -e "==================================================\n"
# ===================== Step 2: Multi-process parallel decompression + process limit =====================
for tar_file in "${tar_files[@]}"; do
# Execute decompression function in background parallel
unpack_tar "${tar_file}" &
# Core rate limit: Wait for any background process to complete when the process count reaches the upper limit
while (( $(jobs -p | wc -l) >= MAX_PROCESSES )); do
wait -n
done
done
# ===================== Final step: Wait for all background decompression processes to complete =====================
echo -e "\n\nWaiting for all remaining decompression processes to complete... (Remaining: $(jobs -p | wc -l) )"
wait
# ===================== Final decompression completion summary =====================
echo -e "\n=================================================="
echo -e "All decompression tasks completed"
echo -e "Decompression statistics: Total=${total_tar_num} | Success=${finished_tar_num} | Failed=${fail_tar_num}"
echo -e "Decompressed files have been restored according to the original directory structure, no manual path adjustment required!"
echo -e "=================================================="
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