04-21-2011
Quote:
Originally Posted by
Franklin52
Use nawk or /usr/xpg4/bin/awk on Solaris.
Hi sir i tried nawk, it seemed to work, but it was not the output i was expecting. this xml file opens up as a spreadsheet when sent out to windows environment. Now I placed keywords like 'kw01' on certain cells in this xml file as a marker in which i have to replace this keywords with data taken from SQL queries which i store in txt files (fatal_alerts.txt). Now what happens is, it did replace the keyword 'kw01' with the contents of 'fatal_alerts.txt', but it also removed the tag responsible for printing the contents in the xml file.
before running this command:
nawk '/kw01/{system("cat fatal_alerts.txt");next}1' template.xml > test.xml
this is the line in the xml file where 'kw01' is present.
Quote:
<Cell ss:StyleID="s78"><Data ss:Type="String">kw01</Data></Cell>
after executing
nawk '/kw01/{system("cat fatal_alerts.txt");next}1' template.xml > test.xml, this is what happens with the line above:
the tags for 'kw01' were removed. while i was expecting something like:
Quote:
<Cell ss:StyleID="s78"><Data ss:Type="String">
no rows selected
</Data></Cell>
this is nerve wrecking.
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LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)