2.6 KiB
title | date | draft |
---|---|---|
Wallpaper Playlist for pywal | 2019-02-16T11:42:33-05:00 | false |
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{{< highlight sh >}}
#!/bin/bash
shuffle_cache="shuffle.txt" regen_flag=0 dir=""
function usage_msg() { # echo "usage: shuffler [-r] [dir_name]" cat <<-EOF Usage: shuffler [-r] [dir_name] -r: regenerate the shuffle cache EOF }
parse for regen_flag{{{
while getopts ":r" opt; do case $opt in r) echo "-r was triggered!" >&2 regen_flag=1 ;; ?) echo "Invalid flag: -$OPTARG" >&2 usage_msg exit 1 ;; esac done #}}}
set dir {{{
shift $((OPTIND-1))
if no dir, use pwd
if "$#" -eq 0 ; then dir=$(pwd) elif "$#" -gt 1 || ! -d "$1" ; then usage_msg exit 1 else dir="$1" fi
}}} set dir
rebuild shuffle cache if regen_flag, doesn't exist or file empty
if "$regen_flag" -eq 1 || ! -f "$dir"/"$shuffle_cache" ||
; then
find "$dir"/* ! -name "$shuffle_cache" -type f | shuf > "$dir"/"$shuffle_cache"
fi
head -n 1 "$dir"/"$shuffle_cache"
printf '%s\n\n' "$(sed '1d' "$dir"/"$shuffle_cache")" > "$dir"/"$shuffle_cache"
vim: set tabstop=2 shiftwidth=2 expandtab:
{{< /highlight >}}