68 lines
1.4 KiB
Bash
Executable file
68 lines
1.4 KiB
Bash
Executable file
#!/bin/bash
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# This script packs a file or directory into a 7z archive with the given password.
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# It can (optionally) split the archives into volumes of a fixed size in megabytes.
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archive_dir="$(dirname "$0")/../archives"
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input_file="${1}"
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archive_pwd="${2}"
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size="$3"
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cleanup() {
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[[ -n "$archive" ]] && rm -f "$archive*"
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echo "Cleaned up all $archive files" >&2
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}
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check_dependencies() {
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if ! mkdir -p "$archive_dir"; then
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echo "ERROR: Unable to create archive directory"
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exit 1
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fi
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if ! command -v 7z 2>&1 >/dev/null; then
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echo "ERROR: 7z must be installed"
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exit 1
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fi
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}
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check_input() {
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if [[ ! -e "${input_file}" ]]; then
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echo "ERROR: Input file '${input_file}' does not exist"
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exit 2
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fi
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echo "Archiving file/directory '${input_file}'" >&2
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}
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set_volumes() {
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volumes=
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if [[ "$size" =~ ^[1-9][0-9]*$ ]]; then
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volumes="-v${size}m"
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elif [[ -n "$size" ]]; then
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echo "Invalid size $size, must be a number"
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exit 2
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fi
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echo "Volumes set to '$volumes'" >&2
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}
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generate_name() {
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archive="$archive_dir/$(base64 /dev/urandom | tr -dc [:alnum:] | head -c 20).7z"
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echo "Generated archive name $archive" >&2
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}
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create_archive() {
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echo "Packing ${input_file} into archive $archive with password ${archive_pwd}"
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[[ -n "$volumes" ]] && echo "and volumes of size $size MB"
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7z a -mhe=on "-p${archive_pwd}" "$volumes" "$archive" "${input_file}" >&2
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}
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trap cleanup 1 2 3 6
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check_dependencies
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check_input
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set_volumes
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generate_name
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create_archive
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