القائمة
Handle grep exit codes safely under set -eo pipefail by isolating pipeline failure scope
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| name | bash-pipefail-grep-error-handling |
| description | Handle grep exit codes safely under set -eo pipefail by isolating pipeline failure scope |
| version | 1.0.0 |
| source | auto-extracted |
| extracted | "2026-04-10T00:00:00.000Z" |
| metadata | {"tags":["bash","debugging","error-handling","pipefail"]} |
When set -o pipefail is enabled, grep returning exit code 1 (no match) will kill the script. The naive || echo "" after a pipeline won't catch failures within the pipe. Wrap the entire pipeline in a subshell or function to isolate the set -e scope, allowing the || fallback to actually catch the failure. Use get_val() { (set -e; grep key file || echo ""); } pattern for optional lookups in configuration scripts.