67 lines
2.3 KiB
Bash
Executable File
67 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# try.sh - demonstrate IOCCC entry 1988/dale
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#
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# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
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# this way allows us to have the user specify a different compiler in an easy
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# way.
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if [[ -z "$CC" ]]; then
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CC="cc"
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fi
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make CC="$CC" all >/dev/null || exit 1
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# clear screen after compilation so that only the entry is shown
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clear
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read -r -n 1 -p "Press any key to run: ./dale hello world: "
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echo 1>&2
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./dale "hello world"
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echo 1>&2
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read -r -n 1 -p "Press any key to run: ./dale these files are in this directory: *: "
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echo 1>&2
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# We need * and do not care about dashes
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#
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# SC2035 (info): Use ./*glob* or -- *glob* so names with dashes won't become options.
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# https://www.shellcheck.net/wiki/SC2035
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# shellcheck disable=SC2035
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./dale these files are in this directory: *
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echo 1>&2
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echo "For the next two commands, ask yourself what they do and why they do it." 1>&2
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echo "Why do they differ in the format from the above command? Finally how can you" 1>&2
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echo "get the more likely desired behaviour?" 1>&2
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echo 1>&2
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echo 1>&2
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# This warning from ShellCheck is incorrect because we deliberately have \\n to show that
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# there will be a newline printed WITH printf(1). Thus this does show correct output.
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#
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# SC2028 (info): echo may not expand escape sequences. Use printf.
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# https://www.shellcheck.net/wiki/SC2028
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# shellcheck disable=SC2028
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echo "$ ./dale \$(printf "the following files exist in this directory:\\n%s\\n" *)"
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read -r -n 1 -p "Press any key to continue: "
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echo 1>&2
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# We do not care about word splitting in this case.
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#
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# SC2046 (warning): Quote this to prevent word splitting.
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# https://www.shellcheck.net/wiki/SC2046
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# shellcheck disable=SC2046
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./dale $(printf "the following files exist in this directory:\n%s\n" *)
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echo 1>&2
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# This warning from ShellCheck is incorrect because we deliberately have \\n to show that
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# there will be a newline printed WITH printf(1). Thus this does show correct output.
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#
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#SC2028 (info): echo may not expand escape sequences. Use printf.
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# https://www.shellcheck.net/wiki/SC2028
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# shellcheck disable=SC2028
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echo "$ ./dale \"\$(printf \"the following files exist in this directory:\\n%s\\n\" *)\""
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read -r -n 1 -p "Press any key to continue: "
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echo 1>&2
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./dale "$(printf "the following files exist in this directory:\n%s\n" *)"
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echo 1>&2
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