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In some test environments like e.g. Ubuntu & Debian autopkgtest it can happen that while generating random device names the pipes between tr and head are considered dead while processing. That prints (non fatal) issues like: Running ip/link/new_link.t [iproute2-this/4.13.0-17-generic]: tr: write error: Broken pipe tr: write error PASS This only happens if reading an infinite amount of chars with the read from urandom, so reading a defined amount fixes the issue. Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> |
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