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Top Forums Shell Programming and Scripting 'for LINE in $(cat file)' breaking at spaces, not just newlines Post 302548600 by yazu on Thursday 18th of August 2011 09:38:39 PM
Old 08-18-2011
Don't write xml parsers in shell. Even the simplest one. Use right tools for job.
---
Code:
while read LINE; do
...
done <INPUTFILE

won't work well either, because of
1. It squashes the first blank spaces. 2. It wouldn't work if the last line doesn't end on the newline char. 3 It has quirks if a line has backslashes:
Code:
cat TESTFILE
<foo a="1">
    <bar b="2" c="Some string\n">
    </bar>
</foo>%
% while read -r LINE; do
  echo "$LINE"
done <TESTFILE
<foo a="1">
<bar b="2" c="Some string
">
</bar>

Yes, there are ways to do with it and shell is a programming language and it allows to do everything with it. But sed is Turing complete too.

Last edited by yazu; 08-18-2011 at 11:00 PM.. Reason: Added the word "well" and the proof.
 

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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe [ name ... ] DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /bin/cat'' it will create the following two files: -r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat -r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~ /bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file. You can remove /bin/cat~ once you are sure that /bin/cat works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some other utilities (tail, chmod, ln, sleep). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)
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