Limpando o cache de miniaturas do terminal no Ubuntu 14.04

Question

Estou procurando liberar algum espaço limpando o cache de miniaturas do terminal.

Dentro da pasta ~/.cache/thumbnails , vejo três pastas:

1. falha
2. grande
3. normal

É seguro limpar todas as três pastas?

    

Answer 1

No Ubuntu 14.04, as miniaturas são armazenadas em ~/.cache/thumbnails , enquanto que no Ubuntu 12.04 são armazenadas em ~/.thumbnails .

Simplesmente você pode excluir tudo o que estiver lá, incluindo os diretórios, sem ter medo de que algo ruim aconteça. Isso apenas redefinirá suas miniaturas, fazendo com que elas sejam recriadas de acordo com as configurações globais.

    

Answer 2

Você pode programar a exclusão de seus arquivos de miniatura editando seu crontab com o comando crontab -e e adicionando uma linha como 30 09 * * * find /home/yourname/.cache/thumbnails/ -maxdepth 3 -type f -delete como sugerido por "troller" aqui .

    

Answer 3

Um pequeno script de linha de comando, então!

#!/bin/bash
# Checked with https://www.shellcheck.net/

set -o nounset

user=             # user to clean
do_it=            # nonempty to actually run remove commands
cmdline_user=     # user given on cmdline (if any)

# ---
# Option processing
# ---

processOptions() {

   # We use bash regular expressions, which are "grep" regular expressions; see "man grep"
   # or "man 7 regex"
   # In that case, the string on the right MUST NOT be enclosed in single or double quotes,
   # otherwise it becomes a literal string

   local param=       # Current parameter
   local use_user=    # Set to nonempty if a user argument is expected in the next PARAM

   local unknown=     # Accumulates unknown PARAMS
   local print_help=  # Set to nonempty if help requested

   for param in "$@"; do   

      # Process arguments that are separate from their option

      if [[ -n $use_user ]]; then
         cmdline_user=$param
         use_user=""
         continue
      fi

      # Process option

      if [[ $param == '--do' ]]; then
         # set global variable
         do_it=YES
         continue
      fi

      if [[ $param =~ --user(=.+)? ]]; then
         if [[ $param =~ --user=(.+)? ]]; then
            # set global variable
            cmdline_user=$(echo "$param" | cut --delimiter="=" --fields=2)
         else 
            # expecting value
            use_user=1
         fi
         continue
      fi

      if [[ $param == '--help' || $param == '-h' ]]; then
         print_help=1
         break
      fi

      # if we are here, we encountered something unknown in PARAM
      # if UNKNOWN is already set, add a comma for separation

      if [[ -n $unknown ]]; then
         unknown="$unknown,"
      fi

      unknown="${unknown}${param}"

   done

   if [[ -n $unknown ]]; then
      echo "Unknown parameters '$unknown'" >&2
      print_help=1
   fi

   if [[ -n $print_help ]]; then
      echo "--user=... to explicitly give user to clean" >&2
      echo "--do       to actually perform operations instead of just printing them" >&2
      exit 1
   fi

}

processOptions "$@"

# The user to handle is either myself or it comes from the command line

if [[ -n $cmdline_user ]]; then
   user=$cmdline_user
else
   user=$(whoami)
fi

# Does the user actually exist? If so get the home dir 

if ! record=$(getent passwd "$user"); then
   echo "Could not get passwd entry of user '$user' -- exiting" >&2
   exit 1
fi

zehome=$(echo "$record" | cut -f6 -d:)

if [[ ! -d "$zehome" ]]; then
   echo "Home directory of user '$user' is '$zehome' but that directory does not exist -- exiting" >&2
   exit 1
fi

# ********
# Path to actually clean out, configure as needed
# ********

clean[0]="$zehome/.cache/thumbnails"
clean[1]="$zehome/.kde/share/apps/okular/docdata"

# Run operations. Depending on "do_it", it's done or not!

for dir in "${clean[@]}"; do   
   if [[ ! -d "$dir" ]]; then
      echo "(Directory '$dir' does not exist or may not be a directory -- skipping that directory)" >&2
   else
      if [[ -z $do_it ]]; then
         echo "Would run: /bin/rm -r \"$dir\""
      else
         echo "Running: /bin/rm -r \"$dir\""
         /bin/rm -r "$dir"
      fi
   fi
done