How to do a recursive find/replace of a string with awk or sed?

Question

How do I find and replace every occurrence of:

subdomainA.example.com

with

subdomainB.example.com

in eve

Answer 1

just to avoid to change also

• NearlysubdomainA.example.com
• subdomainA.example.comp.other

but still

• subdomainA.example.com.IsIt.good

(maybe not good in the idea behind domain root)

find /home/www/ -type f -exec sed -i 's/\bsubdomainA\.example\.com\b/\1subdomainB.example.com\2/g' {} \;

Answer 2

You can use awk to solve this as below,

for file in `find /home/www -type f`
do
   awk '{gsub(/subdomainA.example.com/,"subdomainB.example.com"); print $0;}' $file > ./tempFile && mv ./tempFile $file;
done

hope this will help you !!!

Answer 3

Here's a version that should be more general than most; it doesn't require find (using du instead), for instance. It does require xargs, which are only found in some versions of Plan 9 (like 9front).

 du -a | awk -F' '  '{ print $2 }' | xargs sed -i -e 's/subdomainA\.example\.com/subdomainB.example.com/g'

If you want to add filters like file extensions use grep:

 du -a | grep "\.scala$" | awk -F' '  '{ print $2 }' | xargs sed -i -e 's/subdomainA\.example\.com/subdomainB.example.com/g'

Answer 4

For Qshell (qsh) on IBMi, not bash as tagged by OP.

Limitations of qsh commands:

• find does not have the -print0 option
• xargs does not have -0 option
• sed does not have -i option

Thus the solution in qsh:

    PATH='your/path/here'
    SEARCH=\'subdomainA.example.com\'
    REPLACE=\'subdomainB.example.com\'

    for file in $( find ${PATH} -P -type f ); do

            TEMP_FILE=${file}.${RANDOM}.temp_file

            if [ ! -e ${TEMP_FILE} ]; then
                    touch -C 819 ${TEMP_FILE}

                    sed -e 's/'$SEARCH'/'$REPLACE'/g' \
                    < ${file} > ${TEMP_FILE}

                    mv ${TEMP_FILE} ${file}
            fi
    done

Caveats:

• Solution excludes error handling
• Not Bash as tagged by OP

Answer 5

A straight forward method if you need to exclude directories (--exclude-dir=..folder) and also might have file names with spaces (solved by using 0Byte for both grep -Z and xargs -0)

grep -rlZ oldtext . --exclude-dir=.folder | xargs -0 sed -i 's/oldtext/newtext/g'

Answer 6

Try this:

sed -i 's/subdomainA/subdomainB/g' `grep -ril 'subdomainA' *`