Sed
From Attie's Wiki
Usage
# swap out text (just use regex) sed -i 's/hello/goodbye/' ${FILE} # delete line 5 sed -i '5d' ${FILE} # delete 2 lines, from line 5 sed -i '5,+2d' ${FILE} # delete the matching line sed -i '/test string/d' ${FILE}
Follow a search for a file
For example, while debugging a non-working GStreamer install:
LD_LIBRARY_PATH=/opt/gst/lib/ GST_PLUGIN_PATH=/opt/gst/lib/gstreamer-0.10/ /opt/strace /opt/gst/bin/gst-inspect 2>&1 | tee gst-inspect.out | grep -r ^open | sed -re 's#^(open\(")(([^"/]*/)*)([^"]*)(".* = )([-0-9]*)(.*)$#\4\t\6\t\1\2\4\5\6\7#' | sort