04-18-2007
Quote:
Originally Posted by monu_munish
I want to concatenate any particular field of the file with any String say SSB....but i am not able to do it...
I hv tried the following code....but its saying there is error in parsing it..
awk 'BEGIN { FS = "," ; OFS = "," ; } { for ( i = 1 ; i < 5 ; i++ ) {a=i;b="SSB"; print $1,$a$b,$3 } }' cid.del
Thanks in advance
you declared 'a' and 'b', so just use 'a' and 'b', no need for dollar sign ( $a $b is not correct)
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi , i want to Concatenate a string and use the following code
str="i"
str="$str am \n"
str="$str a \n"
str="$str boy \n"
echo $str
I want to ouput this
i
am
a
boy
However it outputs
i am \n a \n boy \n (3 Replies)
Discussion started by: youareapkman
3 Replies
2. Shell Programming and Scripting
I need a way to build variable in this manner:
variable_$i
Inside a for loop i need to create it.
where i goes from 1 to 30..
and then i need to print them on screen with echo $variable_$i
which is the best way to do this? (6 Replies)
Discussion started by: sreedivia
6 Replies
3. Shell Programming and Scripting
Please look into the example.
My source file is like,
00,57,3,2008-07-24 06:30:06
10,1,8025171,"1M00",17907023,2008-07-23 18:16:58
10,2,8025171,"1M00",17907023,2008-07-23 18:17:01
99,184
What should i do if i want output like...
hello,00,57,3,2008-07-24 06:30:06... (7 Replies)
Discussion started by: pkumar3
7 Replies
4. Shell Programming and Scripting
Is there a way to concatenate two strings, where the first string is "-n" and there is a space between the "-n" and the second string? Below are some examples of what I tried.
#!/bin/sh
var1=test
#working without dashes:
var2="n $var1"
echo $var2
var2=n" "$var1
echo $var2
var2="n... (5 Replies)
Discussion started by: wolfv
5 Replies
5. UNIX for Dummies Questions & Answers
Hello All,
How to concatenate a string to a variable in a script
I'm having a file which is consisting of data and i need to extract the first line of the file and append it to a string.
/tmp/samp.list containg 60000
I like to concatenate it with a string (SS_)
grep -w SS_$(head -1... (1 Reply)
Discussion started by: nkamalkishore
1 Replies
6. Shell Programming and Scripting
In Bash using AWK or sed I need to convert the following file:
...
numitem_tab0 =<p>1 KEYWORD</p><p>2 KEYWORD</p><p>3 KEYWORD</p><p>4 KEYWORD</p><p>5 KEYWORD</p>...<p>25 KEYWORD</p>
subitem_tab0 =<p></p><p></p>
...
numitem_tab6 =<p>1 KEYWORD</p><p>2 KEYWORD</p><p>3 KEYWORD</p><p>4 KEYWORD</p>... (2 Replies)
Discussion started by: pioavi
2 Replies
7. Shell Programming and Scripting
I have a file that looks like this:
John Smith
http://www.profile1.com
http://www.profile2.com
http://www.profile3.com
Marc Olsen
http://www.profile4.com
http://www.profile5.com
http://www.profile6.com
http://www.profile7.com
Lynne Doe
http://www.profile8.com
http://www.profile9.com... (3 Replies)
Discussion started by: locoroco
3 Replies
8. Programming
Hi
mY files paths are defined as :
//sbase = 'D:\data\sample_AMC\fasta_files\';
sbase2 = 'D:\data\sample_AMC\fasta_files\results\';
snameprefix = 'orig_ind';
snameprefix3 = 'results_ind';
...
const string filname = sbase + snameprefix + snamesuffix;
const string resultsname_ =... (2 Replies)
Discussion started by: siya@
2 Replies
9. UNIX for Beginners Questions & Answers
I have below code inside my awk script
if ( $0 ~ /SVC IN:/ )
{
svc_in=substr( $0,23 , 3);
if (msg_start == 1 && msg_end == 0)
{
msg_arr=$0;
}
}
else if ( $0 ~ /^SVC OUT:/ )
{
svc_out=substr( $0, 9, 3);
if (msg_start == 1 && msg_end == 0)
... (6 Replies)
Discussion started by: bhagya123
6 Replies
10. UNIX for Beginners Questions & Answers
I have the following code:
#!/bin/csh
clear
set cloud_file="/home/labs/koren/davidsr/general_scripts/MFP_10_PP_Parmas.txt" # to fill
set mie_tables_dir='/home/labs/koren/davidsr/SHDOM_MAIN/MIE_TABLES/non_polo_wave_0.7_water_50R_s0.5_e25_max_70.mie' # to fill
set prp_dir='${pp_dir}/pp_prp/'... (2 Replies)
Discussion started by: student_wiz
2 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)