Creates a PDF file where each page will be a layer from de original TIFF file.
You can apply many other filters and transformations.
convert multi_layer.tif -page a4 -compress jpg multi_page.pdf
To set the page size
convert multi_layer.tif -crop 590x790+20+30 -compress jpg multi_page.pdf
To include only a portion of the image (discard first horizontal 20 pixels and first vertical 30 pixels, include the next 590 horizontal and 790 vertical pixels)
convert multi_layer.tif -delete 1,3,5-10 -compress jpg multi_page.pdf
Discard mentioned layers
Open all files which have some string go directly to the first line where that string is and run command on it.
Other examples:
Run vim only once with multiple files (and just go to string in the first one):
grep -rl string_to_find public_html/css/ | xargs vim +/string_to_find
Run vim for each file, go to string in every one and run command (to delete line):
grep -rl string_to_find public_html/css/ | xargs -I '{}' vim +/string_to_find {} -c ":delete"
I like to label my grub boot options with the correct kernel version/build. After building and installing a new kernel with "make install" I had to edit my grub.conf by hand. To avoid this, I've decided to write this little command line to: 1. read the version/build part of the filename to which the kernel symlinks point 2. replace the first label lines of grub.conf grub.conf label lines must be in this format: Latest [{name}-{version/build}] Old [{name}-{version/build}] only the {version/build} part is substituted. For instance: title Latest [GNU/Linux-2.6.31-gentoo-r10.201003] would turn to title Latest [GNU/Linux-2.6.32-gentoo-r7.201004]"
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