Read complete lines into an array.
Bash Scripts: Mapfile with -t removes each line terminator but preserves other whitespace.
set -euo pipefail
mapfile -t lines < lines.txt
printf "[%s]\n" "${lines[@]}"Expected output EXAMPLE
[one] [two words]
Details
Requires Bash 4 or later. Save as snippet.sh and run bash snippet.sh in an empty working directory. Mapfile with -t removes each line terminator but preserves other whitespace.
Tested on Ubuntu 24.04.5 LTS · · GNU bash, version 5.2.21(1)-release (x86_64-pc-linux-gnu) · bash 5.2.21-2ubuntu4; coreutils 9.4-3ubuntu6.3
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Snippet process uid 65534 with a read-only root filesystem and temporary working files. Networking disabled. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged process) / C.UTF-8
- Interpreter invocation
bash -euo pipefail -c <published code>- Container image ID
sha256:ec91410a8f6ec3e985830b5e3a0560306d36f8c1c5ccd91a6699abe707123fa3- Code SHA-256
07bd7811c3579a0c7f95c229e4a551b131d8535131119e8febcae3b559c29a65- Dependencies
- bash 5.2.21-2ubuntu4; coreutils 9.4-3ubuntu6.3
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
printf 'one\ntwo words\n' > lines.txt
Observed standard output
[one] [two words]
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.