Linux CLI - Process Management
You want to run
longtask in background but also save its output to log.txt. Which command is correct?You want to run longtask in background but also save its output to log.txt. Which command is correct?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Redirect output before backgrounding
Output redirection must happen before&to capture output properly.Step 2: Analyze options
longtask > log.txt 2>&1 & correctly redirects stdout and stderr to log.txt and backgrounds the command. longtask & > log.txt places & before redirection, which is invalid. longtask > log.txt & 2>&1 misplaces redirection. longtask &> log.txt redirects both streams but runs in foreground without trailing &.Final Answer:
longtask > log.txt 2>&1 & -> Option CQuick Check:
Redirect output before & to save logs [OK]
Quick Trick: Redirect output before & to save logs [OK]
Common Mistakes:
- Placing & before redirection
- Misordering redirection
- Using invalid syntax
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