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67 lines
2.1 KiB
Bash
Executable file
67 lines
2.1 KiB
Bash
Executable file
#!/usr/bin/env sh
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# Description: Create and verify checksums
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#
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# For selection: it will generate one file containing the checksums with file names
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# [and with paths if they are in another directory]
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# the output checksum filename will be checksum_timestamp.checksum_type
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# For file: if the file is a checksum, the plugin does the verification
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# if the file is not a checksum, checksum will be generated for it
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# the output checksum filename will be filename.checksum_type
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# For directory: recursively calculates checksum for all the files in the directory
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# the output checksum filename will be directory.checksum_type
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#
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# Shell: POSIX compliant
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# Author: ath3, Arun Prakash Jana
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selection=${XDG_CONFIG_HOME:-$HOME/.config}/nnn/.selection
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resp=f
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chsum=md5
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checksum_type()
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{
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echo "possible checksums: md5, sha1, sha224, sha256, sha384, sha512"
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printf "create md5 (m), sha256 (s), sha512 (S) (or type one of the above checksums) [default=m]: "
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read -r chsum_resp
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for chks in md5 sha1 sha224 sha256 sha384 sha512
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do
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if [ "$chsum_resp" = "$chks" ]; then
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chsum=$chsum_resp
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return
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fi
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done
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if [ "$chsum_resp" = "s" ]; then
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chsum=sha256
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elif [ "$chsum_resp" = "S" ]; then
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chsum=sha512
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fi
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}
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if [ -s "$selection" ]; then
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printf "work with selection (s) or current file (f) [default=f]: "
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read -r resp
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fi
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if [ "$resp" = "s" ]; then
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checksum_type
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sed 's|'"$PWD/"'||g' < "$selection" | xargs -0 -I{} ${chsum}sum {} > "checksum_$(date '+%Y%m%d%H%M').$chsum"
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elif [ -n "$1" ]; then
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if [ -f "$1" ]; then
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for chks in md5 sha1 sha224 sha256 sha384 sha512
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do
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if echo "$1" | grep -q \.${chks}$; then
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${chks}sum -c < "$1"
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read -r _
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return
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fi
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done
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checksum_type
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file=$(basename "$1").$chsum
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${chsum}sum "$1" > "$file"
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elif [ -d "$1" ]; then
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checksum_type
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file=$(basename "$1").$chsum
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find "$1" -type f -exec ${chsum}sum "{}" + > "$file"
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fi
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fi
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