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8 lines
159 B
Bash
Executable File
8 lines
159 B
Bash
Executable File
#!/bin/sh
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if [ $# -ne 1 ]; then
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echo "Usage: $0 LEN - get random number with length LEN"
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exit 1
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fi
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cat /dev/urandom | tr -dc '0-9' | fold -w $1 | head -n 1
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