user/bkotsgu

   1 #!/bin/bash
   2 # Desc: Updates all ots files in $HOME and /mnt/ directories recursively.
   3 # Depends: bash 5.1.16, GNU Findutils 4.8.0, GNU Coreutils 8.32
   4 # Version: 0.1.3
   5 # Depends: GNU Coreutils (nproc)
   6
   7 main() {
   8     # Specify find targets
   9     declare -a find_targets;
  10
  11     ## User home directory
  12     find_targets+=("$HOME");
  13
  14     ## Subdirectories of /mnt/
  15     mapfile -t -O "${#find_targets[@]}" find_targets < <(find /mnt/ -mindepth 1 -maxdepth 1 -type d; );
  16
  17     # Specify options
  18     find_depth=12;                     # find directory depth
  19     cpu_count="$(nproc)";              # get logical CPU count
  20     batch_size_xargs=100;              # xargs batch size
  21     cpu_duty="$((cpu_count / 4 + 1))"; # logical CPU cores to use
  22
  23     # Remove OTS backup files
  24     find "${find_targets[@]}" -maxdepth "$find_depth" -type f -name "*.ots.bak" -exec rm '{}' \; 2>/dev/random;
  25
  26     # Upgrade OTS files
  27     find "${find_targets[@]}" -maxdepth "$find_depth" -type f -name "*.ots" -print0 2>/dev/random | \
  28         sort -uz | \
  29         shuf -z | \
  30         xargs -0 -n "$batch_size_xargs" -P "$cpu_duty" ots u;
  31 }; # main program
  32
  33 time { main "$@"; };