12.ตัวอย่างสคริปต์

 

12.1 ตัวอย่างสคริปต์ดูรายชื่อไฟล์ในไดเรคทอรี่ย่อย

#!/bin/bash 
function listdir {
    local PAT="$1"
    local ROOT="$2"
    for i in *; do
        if [ -d "$i" ]; then
            local CUR="$ROOT/$i"
            pushd "$i" &>/dev/null
            listdir "$PAT" "$CUR"
            popd &>/dev/null
        fi
    done
    if [ ! -z "$( ls -d $PAT 2>/dev/null )" ]; then
        echo "Directory: $ROOT"
        ls -d $PAT 2>/dev/null
        echo 
    fi
}

if [ -z "$1" ]; then
   echo List file in PATTERN recursive into directories.
   echo Usage: $0 "PATTERN"
   exit
fi
PATTERN="$1"
echo "List $PATTERN"
listdir "$PATTERN" "."

ให้ผลคล้ายคำสั่ง

$ find * -name PATTERN

12.2 ตัวอย่างสคริปต์บีบอัดสำรองข้อมูล

#!/bin/bash          
SRCD="/home/"
TGTD="/var/backups/"
OF=home-$(date +%Y%m%d).tgz
tar -cZf $TGTD$OF $SRCD

12.3 เปลี่ยนชื่อไฟล์ทีละหลายไฟล์

#!/bin/sh
# renna: rename multiple files according to several rules
# written by felix hudson Jan - 2000

#first check for the various 'modes' that this program has
#if the first ($1) condition matches then we execute that portion of the
#program and then exit

# check for the prefix condition
if [ $1 = p ]; then

#we now get rid of the mode ($1) variable and prefix ($2)
  prefix=$2 ; shift ; shift

# a quick check to see if any files were given
# if none then its better not to do anything than rename some non-existent
# files!!

  if [$1 = ]; then
     echo "no files given"
     exit 0
  fi

# this for loop iterates through all of the files that we gave the program
# it does one rename per file given
  for file in $*
    do
    mv ${file} $prefix$file
  done

#we now exit the program
  exit 0
fi

# check for a suffix rename
# the rest of this part is virtually identical to the previous section
# please see those notes
if [ $1 = s ]; then
  suffix=$2 ; shift ; shift

   if [$1 = ]; then
    echo "no files given"
   exit 0
   fi

 for file in $*
  do
   mv ${file} $file$suffix
 done

 exit 0
fi

# check for the replacement rename
if [ $1 = r ]; then

  shift

# i included this bit as to not damage any files if the user does not specify
# anything to be done
# just a safety measure

  if [ $# -lt 3 ] ; then
    echo "usage: renna r [expression] [replacement] files... "
    exit 0
  fi

# remove other information
  OLD=$1 ; NEW=$2 ; shift ; shift

# this for loop iterates through all of the files that we give the program
# it does one rename per file given using the program 'sed'
# this is a sinple command line program that parses standard input and
# replaces a set expression with a give string
# here we pass it the file name ( as standard input) and replace the nessesary
# text

  for file in $*
  do
    new=`echo ${file} | sed s/${OLD}/${NEW}/g`
    mv ${file} $new
  done
exit 0
fi

# if we have reached here then nothing proper was passed to the program
# so we tell the user how to use it
echo "usage;"
echo " renna p [prefix] files.."
echo " renna s [suffix] files.."
echo " renna r [expression] [replacement] files.."
exit 0

# done!

12.4 เปลี่ยนชื่อไฟล์แบบง่าย

#!/bin/bash
# renames.sh
# basic file renamer

criteria=$1
re_match=$2
replace=$3

for i in $( ls *$criteria* ); 
do
    src=$i
    tgt=$(echo $i | sed -e "s/$re_match/$replace/")
    mv $src $tgt
done