Build /home/user/ops_report.txt assembling stats from passwd, users.csv, and syslog.log.
One report, three sections, exact format. Write `/home/user/ops_report.txt` containing EXACTLY:
```
== users ==
total=5
admins=2
== shells ==
bash=2
nologin=1
== syslog ==
sshd_lines=4
errors=1
```
Numbers come from:
- users.csv has a header + 5 user rows → total=5
- 2 of those have role=admin
- /etc/passwd has 2 bash users, 1 nologin user
- syslog.log has 4 sshd lines and 1 [ERR] line
Easiest path: build it with seven echo's (first `>`, rest `>>`). Bonus credit if you compute every number with grep/wc instead of hard-coding.
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