# Some test cases failing for Redirect stdout #jv1 **URL:** \ **Category:** Challenges\ **Tags:** challenge:shell\ **Created:** [May 21, 2025, 11:38pm UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911 "2025-05-21T23:38:09Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![ehizman](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/ehizman/32/8149_2.png) [@ehizman](https://forum.codecrafters.io/u/ehizman)\ **Post date:** [May 21, 2025, 11:38pm UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911/1 "2025-05-21T23:38:09Z")
I need help understanding the challenge. Here is my code: [GitHub - ehizman/unix-shell-java-impl: A simple implementation of a Unix shell in Java.](https://github.com/ehizman/unix-shell-java-impl) Tests fail with this error: ```auto [tester::#JV1] Running tests for Stage #JV1 (Redirection - Redirect stdout) [tester::#JV1] [setup] export PATH=/tmp/grape/pear/strawberry:$PATH [tester::#JV1] Running ./your_program.sh [tester::#JV1] [setup] echo -n "apple" > "/tmp/qux/apple" [tester::#JV1] [setup] echo -n "orange" > "/tmp/qux/orange" [tester::#JV1] [setup] echo -n "raspberry" > "/tmp/qux/raspberry" [your-program] $ ls -1 /tmp/qux > /tmp/bar/bar.md [your-program] $ cat /tmp/bar/bar.md [your-program] orange [tester::#JV1] Output does not match expected value. [tester::#JV1] Expected: "apple" [tester::#JV1] Received: "orange" [your-program] apple [your-program] raspberry ``` I understand why the order of the expected output keeps changing ---
**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\ **Post date:** [May 22, 2025, 12:21am UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911/4 "2025-05-22T00:21:17Z")
Hey @ehizman, you probably don’t need to implement your own `ls`. It’s available as an executable on most systems: ![image](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/2X/5/548266a714e847909fc12f2f7a63e3bd4bfc2380.png) That said, if you’d like to keep your custom implementation, make sure it sorts files alphabetically by name (in ascending order) to match the default behavior of `ls`: ![image](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/2X/1/17b661eb346d161f252cb4f28529f55fb363431f.png) Let me know if you’d like further clarification! ---
**Author:** ![ehizman](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/ehizman/32/8149_2.png) [@ehizman](https://forum.codecrafters.io/u/ehizman)\ **Post date:** [May 23, 2025, 7:06am UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911/6 "2025-05-23T07:06:53Z")
Oh wow. I commented out my custom implementation of `ls` and `cat` and then checked the scanner input for a redirect, if the scanner input contains a redirect, I set the system output to the redirect target. Unfortunately, I still get this error: ```auto [tester::#JV1] Running tests for Stage #JV1 (Redirection - Redirect stdout) [tester::#JV1] [setup] export PATH=/tmp/mango/banana/mango:$PATH [tester::#JV1] Running ./your_program.sh [tester::#JV1] [setup] echo -n "mango" > "/tmp/qux/mango" [tester::#JV1] [setup] echo -n "orange" > "/tmp/qux/orange" [tester::#JV1] [setup] echo -n "pineapple" > "/tmp/qux/pineapple" [your-program] $ ls -1 /tmp/qux > /tmp/quz/bar.md [tester::#JV1] Expected prompt ("$ ") but received "" [tester::#JV1] Assertion failed. [tester::#JV1] Test failed ``` I need help figuring this out. Do you mind @andy1li . Thanks ---
**Author:** ![EshaanAgg](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/eshaanagg/32/399_2.png) [@EshaanAgg](https://forum.codecrafters.io/u/EshaanAgg)\ **Post date:** [May 23, 2025, 11:56am UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911/8 "2025-05-23T11:56:50Z")
Seems like when the command is executed, the shell remains “stuck” in the process of execution of the command and writing to the file, and does not print the prompt `$ ` again. I haven’t taken a look at the code yet (as I’m not really well versed in Java), but my guess would be this is because not closing the resources appropriately after the execution, like perhaps the file that you are opening to redirect the output to, or the `runtime.exec` that you must be using to run the executable mentioned in the command. ---
**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\ **Post date:** [June 1, 2025, 7:09pm UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911/9 "2025-06-01T19:09:25Z")
Closing this thread due to inactivity. If you still need assistance, feel free to reopen or start a new discussion! ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/3X/7/0/700657133935c15703e22c7c8870394f6e6dc27d.svg) [@system](https://forum.codecrafters.io/u/system)\ **Post date:** [June 6, 2025, 8:08pm UTC](https://forum.codecrafters.io/t/some-test-cases-failing-for-redirect-stdout-jv1/10911/11 "2025-06-06T20:08:30Z")
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