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# Our ~/.profile should already have made a directory with the supported
# options for us; if not, we won't be wrapping ls(1) with a function at all
[ -d "$HOME"/.cache/sh/opt/ls ] || return
# If the system has already aliased ls(1) for us, like Slackware or OpenBSD
# does, just get rid of it
unalias ls >/dev/null 2>&1
# Discard GNU ls(1) environment variables if the environment set them
unset -v LS_OPTIONS LS_COLORS
# Define function proper
ls() {
# -F to show trailing indicators of the filetype
# -q to replace control chars with '?'
set -- -Fq "$@"
# If output is to a terminal, add -x to format entries across, not down
[ -t 1 ] && set -- -x "$@"
# Add --block-size=K to always show the filesize in kibibytes
[ -e "$HOME"/.cache/sh/opt/ls/block-size ] &&
set -- --block-size=1024 "$@"
# Add --color if the terminal has at least 8 colors
[ -e "$HOME"/.cache/sh/opt/ls/color ] &&
[ "$({ tput colors || tput Co ; } 2>/dev/null)" -ge 8 ] &&
set -- --color=auto "$@"
# Add --time-style='+%Y-%m-%d %H:%M:%S' to show the date in my preferred
# (fixed) format
[ -e "$HOME"/.cache/sh/opt/ls/time-style ] &&
set -- --time-style='+%Y-%m-%d %H:%M:%S' "$@"
# If the operating system is FreeBSD, there are some specific options we
# can add that might mean different things to e.g. GNU ls(1)
case $OS in
FreeBSD)
# -D: Timestamp format
# -G: Use color
set -- -D '%Y-%m-%d %H:%M:%S' -G "$@"
;;
esac
# Run ls(1) with the concluded arguments
command ls "$@"
}
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