RE: [PATCH] Try not abuse cat

Replace $(cat ...) with $(< ...) which help improve the performance. Signed-off-by: Kairui Song <kasong(a)redhat.com&gt; --- dracut-module-setup.sh | 6 +++--- kdump-lib.sh | 10 +++++----- kdumpctl | 6 +++--- mkdumprd | 3 +-- 4 files changed, 12 insertions(+), 13 deletions(-) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index a186570..6a13f53 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -94,7 +94,7 @@ kdump_setup_dns() { _dns=$(echo $_nameserver | cut -d' ' -f2) [ -z "$_dns" ] && continue - if [ ! -f $_dnsfile ] || [ ! $(cat $_dnsfile | grep -q $_dns) ]; then + if [ ! -f $_dnsfile ] || [ ! $(< $_dnsfile | grep -q $_dns) ]; then