bash loop
while read
- This code WILL work on filenames with spaces
- quote “For splits items on a space, regardless of if they’re quoted (if they’re stored in a variable). However, the read command does not.”
ls -1L *.tiff | while read file;do du -h -d 0 "${file}" done
- another example:
ls -1L *.tiff | while read file;do tiff2pdf -p letter -o "${file}".pdf "${file}" done
- use a file containing a list of filenames for a copy operation:
cat fileswithnotesbug.txt | while read file;do cp "${file}" /cygdrive/n/Receive/CIA/nsf/ClmTest/; done
for
- This code will NOT work on filenames with spaces unless the IFS variable is set in bash (see man bash for more details)
- note that the symbols used are backticks, not single quotes (backtick is the key left of 1)
for file in `ls -1L`;do du -h -d 0 $file done
Another example showing how to set up new folders with git repo's:
$ mkdir ~/git $ cd ~/git $ for i in a b c d do mkdir $i cd $i git init echo "module $i" > $i.txt git add $i.txt git commit -m "Initial commit, submodule $i" cd .. done
original url: http://www.kernel.org/pub/software/scm/git/docs/user-manual.html#submodules
other notes
Props to this post, this is a very elegant solution to weird characters in filenames: http://www.macgeekery.com/tips/cli/h...spaces_in_bash Code: find . -type f -print | while read i; do touch "${i}"; done That will fail if any filenames have leading or trailing spaces or end in a backslash. (Not to mention filenames containing newlines.) Quote: 'for' splits on spaces. Period. Regardless of quoting. It does not split on spaces if there is no space in the value of $IFS. Quote: 'read' does not. It does if more than one variable is given as an argument (and IFS contains a space).