Not all versions of Linux have /bin/test

The org.jline.terminal.impl.exec.ExecTerminalProvider uses a test program to detect if a stream is attached to a terminal:

jline3/terminal/src/main/java/org/jline/terminal/impl/exec/ExecTerminalProvider.java

Line 122 in ccfb8c5

    
           Process p = new ProcessBuilder(OSUtils.TEST_COMMAND, "-t", Integer.toString(stream.ordinal()))

The test program appears to be hardcoded to /bin/test:

jline3/terminal/src/main/java/org/jline/utils/OSUtils.java

Line 95 in ccfb8c5

test = "/bin/test";

But, there appear to be some versions of Linux that use /usr/bin/test rather than /bin/test, which then leads to misdetection of the terminal streams as non-terminal, and then JLine won't switch to raw mode, and input does not work properly.

Inside OpenJDK, this lead to:
openjdk/jdk@fab2357

Maybe using something like:

test = Files.exists(Paths.get("/bin/test")) ? "/bin/test" : "/usr/bin/test";

Fix detection of utilities (fixes jline#839)

Fix detection of utilities (fixes #839)

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Not all versions of Linux have /bin/test #839

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Not all versions of Linux have /bin/test #839

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gnodet commented on Mar 29, 2023

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