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21 lines
634 B
Markdown
21 lines
634 B
Markdown
## Name
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checksum - helper program for calculating checksums
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## Synopsis
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`$ md5sum [options...] <file...>`
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`$ sha1sum [options...] <file...>`
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`$ sha256sum [options...] <file...>`
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`$ sha512sum [options...] <file...>`
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## Description
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This program calculates and print specified checksum of files. It cannot be run directly, only
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as `md5sum`, `sha1sum`, `sha256sum` or `sha512sum`. A non-zero exit code is returned if the
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input cannot be read. If the '--check' option is used, a non-zero exit code is also returned
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if the checksums cannot be verified.
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## Options
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* `-c`, `--check`: Verify checksums against `file` or stdin.
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