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# set number of threads to nproc available, but <= 16 np=$(nproc) [[ np -gt 16 ]] && np=16 cname="/etc/mplayer/mplayer.conf.rpmnew" [[ -e "$cname" ]] || cname="/etc/mplayer/mplayer.conf" sed -i "s/threads=8/threads=$np/" "$cname"