Shell script to append text to each file?

I have a folder full of text files. I need to append the same block of text to each of them (and of course overwrite the original file).

I was wondering what the correct Bash shell syntax would be for this开发者_如何学运维. Would I use cat?

I have done a few batch scripts but I'm not a Bash expert. Any suggestions appreciated.

Use append redirection.

for f in *.txt
do
  cat footer >> "$f"
done

If you're needing to do this via a script, you can use echo and append redirection to get the extra text into the files.

FILES=pathto/*
for f in $FILES ; do
    echo "#extra text" >> $f
done

sed -i.bak "$ a $(<file_block_of_text)" *.txt

Variant of kurumi's answer:

sed -i.bak "\$aTEXTTOINSERT" *.txt

For more details, see SED: insert something to the last line?

very simply one which worked well for me

#!/bin/sh
FILES="./files/*"

for f in $FILES
do
    echo '0000000' | cat - $f > temp && mv temp $f
done