To search and replace for any matched pattern in the current directory including all the sub-directory.

global-replace.sh

#!/bin/bash -x
  
## Note: this script has dependency on "ack" utility.

if [ $# -lt 2 ]; then
    echo "--------- Synopsis--------"
    echo "Synopsis: Globally replace an old pattern withe a new text string for all directories given"
    echo "Usage: $0 <old_pattern> <new_text> [directory, default: ./]"
    echo "e.g."
    echo "    $0 '=logging\/' '/root/logging_files\/' /home/ec2-user/all/ansible/roles"

    echo " "
    exit 1
fi

#### variables ####
OLD=$1
NEW=$2
DIR=${3:-./}

if [ ! -d "$DIR" ]; then
    echo "*** ERROR: target directory not found!!"
    exit 1
fi

test_isMacOS=0
function isMacOS() {
    tmp=`uname -o 2>&1 |grep  Darwin`
    if [ ! "$tmp" == "" ]; then
        test_isMacOS=1
    else
        test_isMacOS=0
    fi
}
isMacOS

cd $DIR
files=`ack "$OLD" -l`
CURR_DIR=`pwd`
for f in $files
do
    echo "-----------"
    subDir=$(dirname $f)
    newFile=$(basename $f)
    cd ${subDir}
    echo "... Process file: $DIR/$f ..."
    echo "... into subdirectory: $subDir, to process file: $newFile"
    ## sed -i "s#=logging/#=/root/logging_files/#g" kibana-server-install.yml
    if [ $test_isMacOS -eq 1 ]; then
        sed -i '' "s#${OLD}#${NEW}#g" ./${newFile}
    else
        sed -i "s#${OLD}#${NEW}#g" ./${newFile}
    fi
    cd ${CURR_DIR}
done