Bash - echo linha por linha, ignorando o espaço entre as linhas

Question

Eu li a postagem em: bash - substitua o espaço pela nova linha , mas isso não ajudou a resolver meu problema.

   [My Directory]

[root@testlabs Config]# ls 
Archive Backup_Files
config_file.tgz
hostname1-config.uac
hostname2-config.uac
hostname3-config.uac
My-config_17Oct2014.tgz
non_extension-config_file1
non_extension-config_file2
[root@testlabs Config]#

Eu preciso fazer eco de uma lista de resultados da soma de verificação MD5 de um arquivo. Eu posso fazer isso fazendo isso:

##IDENTIFY MD5 CHECKSUM##

 //To output the md5sum of the original file with a correct format to a temp file [md5<space><space>file_name]
ls $FULL_FILE_NAME | md5sum  $FULL_FILE_NAME > /tmp/md5sum.tmp

//To compare the md5sum of the orignal file with the md5sum of the backup copies in the archive directory
ls $CONFIG_ARCHIVE_DIR | grep -i --text $CONFIG_FILE_HOSTNAME-$FILE_TIMESTAMP.tgz | md5sum -c /tmp/md5sum.tmp >> /tmp/md5sum2.tmp

##COMPARING MD5 CHECKSUM##

 if [ -s /tmp/md5sum2.tmp ];
 then
   echo ""
   echo "Comparison of MD5 for files archived:"
   echo '---------------------------------------'
   /bin/sort -d /tmp/md5sum2.tmp
 fi

e este será o resultado quando for executado: (eco do conteúdo em /tmp/md5sum2.tmp)

Comparison of MD5 for files archived:
---------------------------------------
 config_file.tgz: OK
 hostname1-config.uac: OK
 hostname2-config.uac: OK
 hostname3-config.uac: OK
 My-config_17Oct2014.tgz: OK
 non_extension-config_file1: OK
 non_extension-config_file1: OK

## WANTED ##

No entanto, gostaria que o resultado fosse exibido desta forma:

Comparison of MD5 for files archived:
---------------------------------------
 - config_file.tgz: OK
 - hostname1-config.uac: OK
 - hostname2-config.uac: OK
 - hostname3-config.uac: OK
 - My-config_17Oct2014.tgz: OK
 - non_extension-config_file1: OK
 - non_extension-config_file2: OK

Eu tentei fazer isso (ecoa o conteúdo de /tmp/md5sum2.tmp em /tmp/md5sum3.tmp com o '-' infront)

1)

 ##COMPARING MD5 CHECKSUM##

  if [ -s /tmp/md5sum2.tmp ];
  then
  echo ""
  echo "Comparison of MD5 for files archived:"
  echo '---------------------------------------'
  /bin/sort -d /tmp/md5sum2.tmp

  for CONFIG_FILES in '/bin/cat /tmp/md5sum2.tmp'
  do
/bin/sort -d /tmp/md5sum2.tmp | grep $CONFIG_FILES > /tmp/md5sum3.tmp
  done

  for MD5_COMPARE in $(/bin/sort -d /tmp/md5sum3.tmp)
  do
   echo -e " - $MD5_COMPARE\n"
  done
 fi

Resultado 1)

Comparison of MD5 for files archived:
 ---------------------------------------
 - config_file.tgz:
 - OK
 - hostname1-config.uac:
 - OK
 - hostname2-config.uac:
 - OK
 - hostname3-config.uac:
 - OK
 - My-config_17Oct2014.tgz.tgz:
 - OK
 - non_extension-config_file1:
 - OK
 - non_extension-config_file2:
 - OK

2)

for MD5_COMPARE in $(/bin/sort -d /tmp/md5sum3.tmp)

  do
  echo -n " - $MD5_COMPARE"
  done

Resultado 2)

  Comparison of MD5 for files archived:
  ---------------------------------------
- config_file.tgz: - OK - hostname1-config.uac: - OK - hostname2-config.uac: - OK - 
  hostname3-config.uac: - OK - My-config_17Oct2014.tgz: - OK - non_extension-config_file1: -
OK - non_extension-config_file2: - OK

    

Answer 1

Para ler o arquivo, o procedimento padrão linha por linha é

while IFS= read -r MD5_COMPARE
do
  echo "- $MD5_COMPARE"
done < /tmp/md5sum2.tmp | /bin/sort -d

Mas sed deve funcionar também

/bin/sort -d /tmp/md5sum2.tmp | sed 's/^/ -/'

    

Answer 2

Basta enviar a saída de sort para sed e substituir um espaço por - :

if [ -s /tmp/md5sum2.tmp ];
then
        echo ""
        echo "Comparison of MD5 for files archived:"
        echo '---------------------------------------'
        /bin/sort -d /tmp/md5sum2.tmp | sed 's/\(^ *\) \( [^ ]\)/-/'
fi

Resultado:

Comparison of MD5 for files archived:
---------------------------------------
    - My-config_17Oct2014.tgz: OK
    - config_file.tgz: OK
    - hostname1-config.uac: OK
    - hostname2-config.uac: OK
    - hostname3-config.uac: OK
    - non_extension-config_file1: OK
    - non_extension-config_file1: OK