Shell Programming and Scripting

cadena= "cual es mi largo"

echo "cadena : $cadena#

cadena :16

cadena="cual es mi largo"
echo $cadena | awk '{print length($0)}'
OR
echo "cual es mi largo" | awk '{print length($0)}'

cadena="cual es mi largo"
echo "cadena : ${#cadena}"

cadlen=${#cadena}

file.txt

cadena1
cadenados
cadenatercera


ouput 

7
9
13

while read linea
     do
       #echo "Archivos Entrada: $linea"
       largo=`awk '{print length($linea)}'`
       echo "largo : $largo "

       if [ $largo -ne  171  ]; then
         echo "a es igual a 1"
       fi

     done <  ${PATH_DAT}/$ArchPro #while read linea

 while read linea
     do
       #echo "Archivos Entrada: $linea"
       largo=${#linea}
       echo "largo es: $largo "

      if [ $largo -ne 171 ]
       then
         echo "Registro menor a 171"
         echo " $linea > ERROR DE LONGITUD"  >  $PATH_DAT/$ArchSalida
       fi

     done <  ${PATH_DAT}/$ArchPro #while read line

$ 
$ cat data.log
cadena1
cadenados
cadenatercera
cadenatercera
beer
$ 
$ cat line_length.sh
#!/bin/bash
FILE="data.log"
while read linea
do
    largo=$(echo $linea | awk '{print length($0)}')   # One way to find length
    len=${#linea}                                     # And another way to find length
    len1=$(awk -v L=$linea 'BEGIN{print length(L)}')  # And another way to find length
    len2=$(expr length $linea)                        # And another way to find length
    len3=$(echo -n $linea | wc -c)                    # And another way to find length
    echo $largo,$len,$len1,$len2,$len3
done < $FILE
$ 
$ . line_length.sh
7,7,7,7,7
9,9,9,9,9
13,13,13,13,13
13,13,13,13,13
4,4,4,4,4
$ 
$

$ 
$ cat data.log
cadena1
cadenados
cadenatercera
cadenatercera
beer
$ 
$ cat max_line_length.sh
#!/bin/bash
MAX=0
FILE="data.log"
while read linea
do
    len=${#linea}
    if [ $len -gt $MAX ]
    then
        MAX=$len
    fi
done < $FILE
echo "Max length is $MAX"
$ 
$ . max_line_length.sh
Max length is 13
$ 
$