The problem is that the null string as FS separator is treated differently in older AWK implementations.
From Effective GAWK Programming:
Quote:
There are times when you may want to examine each character of a record separately.
This can be done in gawk by simply assigning the null string ("") to FS. In
this case, each individual character in the record becomes a separate field.[...]
Traditionally, the behavior of FS equal to "" was not defined. In this case, most
versions of Unix awk simply treat the entire record as only having one field. (d.c.)
In compatibility mode (see the section “Command-Line Options” in Chapter 11), if
FS is the null string, then gawk also behaves this way
I mean:
---------- Post updated at 02:45 PM ---------- Previous update was at 02:43 PM ----------
Quote:
Originally Posted by ahmad.diab
[...]
but my question is how I can set the FS variable to null FS="" using solaries 10??
You already did it, but it has a different meaning for your AWK implementation.
And of course, you can install gawk on Solaris .
Hi all,
I have searched and found various threads about removing spaces from a field within a text file. Unfortunately, I have not found exactly what I'm looking for, nor am I adept enough to modify what I've found into what I need.
I use the following command to remove the first line... (3 Replies)
Hi ALL
I have one input file say FILE1 which looks as below.
a=1
b=2
c=3
a=4
b=5
c=6
.
.
.
Here a,b,c...etc are variable names.
The output file(FILE2) should look like
1,2,3
4,5,6
.....
..... (5 Replies)
I desperately need to write a script that go into text documents that list the location of files in small caps and have it convert the directories and subdirectories that lead to the file as Title Caps while leaving the file itself in small caps... to illustrate what I mean:
I need to turn txt... (6 Replies)
Hi Friends,
I am Stuck up with a problem on transposing Rows to Coloumns.. Though there are many threads on this my problem is little difficult..
I have a tab separated file like Below,
computer selling_loc currency_type manufacturer_name salesweek-wk1 sales-wk2 ...wk-3 ..wk4 till... (7 Replies)
I have a csv that looks like this:
,yude-to-nap2,0,0,0,0,0
,2twis-yude-to-nap2,0,0,0,0,0
,2tiws-yude-to-nap2,0,0,0,0,0
,2arcos-yude-to-nap2,0,0,0,0,0
and another file named m1 that has a single line of text as content:
Feb 1 15:30:20
How can I fill the whole the empty column of the... (1 Reply)
Greetings.
I've got a csv file with data along these lines:
Spumoni's Pizza Place, Placemats n Things, Just Lamps
Counterfeit Dollars by Vinnie, Just Shades, Dollar StoreI want to replace the entire comma-delimited field if it matches something ending in "Place" or beginning with "Dollar",... (2 Replies)
I am looking to write a script that will read the php.ini files on my web host. If the two lines do exist do nothing. If not append two lines to the end of it then move on to the next directory and open the next php.ini file.
I have the beginning of one that was given to me on another web site but... (6 Replies)
I want to search a small string in a large string and find the locations of the string. For this I used grep "string" -ob <file name where the large string is stored>. Now this gives me the locations of that string. Now how do I store these locations in a text file.
Please use CODE tags as... (7 Replies)
Discussion started by: ANKIT ROY
7 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)