Hi, `readlink` is faster than `realpath` for a large number of input arguments. Note that the former starts slower than the latter. What tricks is used in readlink to make it faster? Thanks.
https://github.com/bminor/bash/blob/master/examples/loadables/realpath.c bash> builtin enable -f ~/Downloads/bash-4.4/examples/loadables/realpath realpath bash> type realpath realpath is a shell builtin bash> type readlink readlink is /usr/local/opt/coreutils/libexec/gnubin/readlink bash> readlink -e . > /dev/null real 0m0.014s user 0m0.003s sys 0m0.006s bash> realpath . > /dev/null real 0m0.003s user 0m0.001s sys 0m0.002s bash> readlink -e $(printf '. %.0s' {1..10000}) > /dev/null real 0m0.200s user 0m0.078s sys 0m0.121s bash> realpath $(printf '. %.0s' {1..10000}) > /dev/null real 0m0.211s user 0m0.105s sys 0m0.103s -- Regards, Peng
