Visualizza wikitesto di Progetto Backup DB

Verifica Sistema operativo per gestire eccezioni:

 #!/bin/bash
 case "$OSTYPE" in
   solaris*) echo "SOLARIS" ;;
   darwin*)  echo "OSX" ;;
   linux*)   echo "LINUX" ;;
   bsd*)     echo "BSD" ;;
   msys*)    echo "WINDOWS" ;;
   aix*)     echo "AIX" ;;
   *)        echo "unknown: $OSTYPE" ;;
 esac


Lettura parametri:

 #!/bin/bash
 
 POSITIONAL=()
 while [[ $# -gt 0 ]]
 do
 key="$1"
 
 case $key in
     -e|--extension)
     EXTENSION="$2"
     shift # past argument
     shift # past value
     ;;
     -s|--searchpath)
     SEARCHPATH="$2"
     shift # past argument
     shift # past value
     ;;
     -l|--lib)
     LIBPATH="$2"
     shift # past argument
     shift # past value
     ;;
     --default)
     DEFAULT=YES
     shift # past argument
     ;;
     *)    # unknown option
     POSITIONAL+=("$1") # save it in an array for later
     shift # past argument
     ;;
 esac
 done
 set -- "${POSITIONAL[@]}" # restore positional parameters
 
 echo "FILE EXTENSION  = ${EXTENSION}"
 echo "SEARCH PATH     = ${SEARCHPATH}"
 echo "LIBRARY PATH    = ${LIBPATH}"
 echo "DEFAULT         = ${DEFAULT}"
 echo "Number files in SEARCH PATH with EXTENSION:" $(ls -1 "${SEARCHPATH}"/*."${EXTENSION}" | wc -l)
 if [[ -n $1 ]]; then                                            
     echo "Last line of file specified as non-opt/last argument:"
     tail -1 "$1"                                                
 fi
 
Esempio di lancio:
 Example: demo-space-separated.sh -e conf -s /etc -l /usr/lib /etc/hosts  
 
Esempio di output:

 FILE EXTENSION  = conf                                                                                           
 SEARCH PATH     = /etc                               
 LIBRARY PATH    = /usr/lib                           
 DEFAULT         =                                    
 Number files in SEARCH PATH with EXTENSION: 14       
 Last line of file specified as non-opt/last argument:
 #93.184.216.34    example.com