So is there a way to get sed to treat the '.' as literal in the variable? The number following the '.' may not always be '0'. Any more thoughts? Thank you very much.
you have to 'escape' it:
echo 'SCCS=33.4' | sed 's/\./\\\&/g'
On the second thought, why don't you do everything in AWK? You already are using it, so..
Hi,
I'm looking for someone who can think in sed. Basically, I need the trailing characters on every line in a file to be deleted. These characters are all in capitals, and always follow a number, but they often vary in number
For instance, on the line:
2006_10_9_p20_TALK
I'd want to... (4 Replies)
Hi All,
I'm currently using SED to make various changes to some .xml files I'm working on, but I'm stuck on this particular problem.
I want to remove '<placeholder>element-name</placeholder>' from the following:
<heading>Element <placeholder>element-name</placeholder> not... (2 Replies)
I am trying to get rid of some ending tags but I run into some problems.
Ex.
How are you?</EndTag><Begin>It is fine.</Begin><New> Just about
I am trying to get rid of the ending tags, starts with </ and ending with >. (which is </EndTag> and </Begin>)
I tried the following
sed... (2 Replies)
I'm using sed to perform a simply search and replace. The typical data is:
<fig><image href="Graphics/BAV.gif" align="left" placement="break"
I need to replace the value in the first set of quotes, keeping the remainder of the line the same. Thus:
<fig><image href="NEW_VALUE" align="left"... (3 Replies)
Hi All,
Here is what I'm trying to do with sed:
Input File:
somechangeVariable1=Something I would like to change
somechangeVariable2=Something else I would like to change
...
Output File:
somechangeVariable1=Something I would like to different
somechangeVariable2=Something else I would... (6 Replies)
I am having the following problem. I am having a lot of files (test_1_01.hea, test_1_02.hea, etc) with the content:
project_directory /net/1/d_1/5/
tmp_directory /net/1/d_1/5/
material_directory /net/1/d_1/5/
And I have to substitute the filepaths with new counted ones where the... (3 Replies)
Is there a way to substitute the URL-encoding references of ( & and ` ) with their actual appearance? for example....
%26 is &
say I want to convert every %26 in my file to &.....
awk '{gsub(/%26/,"&");print}'
Is there a way to do this?
I also want to be able to convert ` too! (3 Replies)
I am trying to do what I thought should be a simple substitution, but I can't get it to work.
File:
Desire output:
I thought I'd start with a sed command to remove the part of the header line preceding the string "comp", then go on to remove the suffix of the target string (e.g. ":3-509(-)"),... (3 Replies)
Dear all,
I try to replace a string of characters in a file (MyFile.txt) by a multiline value of the variable "Myvar":
$ cat MyFile.txt
DESCRIPTION '@TargetTable SCHEMA'
(
@InputFlowDef
);
$
The content of Myvar:
$ echo "$Myvar"
col1
, col2
, col3
$ (4 Replies)
hi all,
i'd like to modify a file with sed , i want to substuite a char "-" with "/"
how can i do this?
Thanks for all
regards
Francesco (16 Replies)
Discussion started by: Francesco_IT
16 Replies
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)