When the shell sees > index.html in the command line it opens the file index.html for writing, wiping off all its previous contents. To fix this you need to pass the -i option to sed to make the changes inline and create a backup of the original file before it does the changes in-place: sed … Read more
Try tail: tail -n +2 “$FILE” -n x: Just print the last x lines. tail -n 5 would give you the last 5 lines of the input. The + sign kind of inverts the argument and make tail print anything but the first x-1 lines. tail -n +1 would print the whole file, tail -n … Read more
head and pipe with tail will be slow for a huge file. I would suggest sed like this: sed ‘NUMq;d’ file Where NUM is the number of the line you want to print; so, for example, sed ’10q;d’ file to print the 10th line of file. Explanation: NUMq will quit immediately when the line number … Read more
find /home/www \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i ‘s/subdomainA\.example\.com/subdomainB.example.com/g’ -print0 tells find to print each of the results separated by a null character, rather than a new line. In the unlikely event that your directory has files with newlines in the names, this still lets … Read more
sed is intended to be used on line-based input. Although it can do what you need. A better option here is to use the tr command as follows: tr ‘\n’ ‘ ‘ < input_filename or remove the newline characters entirely: tr -d ‘\n’ < input.txt > output.txt or if you have the GNU version (with … Read more
To remove the line and print the output to standard out: sed ‘/pattern to match/d’ ./infile To directly modify the file – does not work with BSD sed: sed -i ‘/pattern to match/d’ ./infile Same, but for BSD sed (Mac OS X and FreeBSD) – does not work with GNU sed: sed -i ” ‘/pattern … Read more