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65 lines
1.8 KiB
Bash
Executable file
65 lines
1.8 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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# If selection is used: 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 filename will be checksum_timestamp.checksum_type
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# If file is used: if the file is a checksum, it does the verification
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# if the file is not a checksum, it will be created from it
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# The filename will be filename.checksum_type
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#
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# Shell: POSIX compliant
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# Author: ath3
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selection=~/.config/nnn/.selection
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resp=f
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chsum=md5
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ischksum=0
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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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echo -n "create md5 (m), sha256 (s), sha512 (S) (or type one of the above checksums) [default=m]: "
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read 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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echo -n "work with selection (s) or current file (f) [default=f]: "
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read 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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else
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if [ -n "$1" ] && [ -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 "$1" | grep \.${chks}$)" ]; then
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ischksum=1
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${chks}sum -c < "$1"
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read
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exit
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fi
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done
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if [ $ischksum -eq 0 ]; then
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checksum_type
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file=$(basename "$1").$chsum
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${chsum}sum "$1" > "$file"
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fi
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fi
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fi
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