05-09-2011
Quote:
Originally Posted by
Franklin52
Why?
Is this a home work assignment?
no..its not an assignment....
---------- Post updated at 07:53 PM ---------- Previous update was at 01:42 PM ----------
Folks,
how do i compare the integer , real and float numbers in the numeric field of the column , i mean the $3 ?
Your help is appreciated.
Venu
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello experts,
I am trying to read a line from a csv file that contains '.doc' and print the second column in all caps.
e.g.
My csv file contains:
Test.doc|This is a Test|test1|tes,t2|test-3
Test2.pdf|This is a Second Test| test1|tes,t2|t-est3
while read line
do
echo "$line" |... (3 Replies)
Discussion started by: orahi001
3 Replies
2. Shell Programming and Scripting
Hi,
I have gps receiver log..its giving readings .like below
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GPSD,R=1
$GPGSV,3,1,11,08,16,328,40,11,36,127,00,28,33,283,39,20,11,165,00*71... (3 Replies)
Discussion started by: gudivada213
3 Replies
3. Shell Programming and Scripting
I am using the while-loop to read a file.
The file has lines with null-terminated strings (words, actually.)
What I have by that reading - just a first word up to '\0'!
I need to have whole string up to 'new line' - (LF, 10#10, 16#A)
What I am doing wrong?
#make file 'grb' with... (6 Replies)
Discussion started by: alex_5161
6 Replies
4. Shell Programming and Scripting
Hi,
i have file which contains data as below(Only sample shown, it may contain more data similar to the one shown here)
i need to read this file line by line and generate an output file like the one below
i.e based on N value the number of MSISDNs will vary, if N=1 then the following... (14 Replies)
Discussion started by: aemunathan
14 Replies
5. UNIX for Dummies Questions & Answers
Folks,
how do i skip the first line in a csv, while doing the read of a csv file in to a variable line by line.
eg :
do
echo $line
done < $rpt
where rpt is path to csv file
The initial 1st line is a garbage that i want to avoid, and start reading from 2nd line
... (2 Replies)
Discussion started by: venu
2 Replies
6. Shell Programming and Scripting
Hi All,
I'm trying to figure out which are the trusted-ips and which are not using a script file.. I have a file named 'ip-list.txt' which contains some ip addresses and another file named 'trusted-ip-list.txt' which also contains some ip addresses. I want to read a line from... (4 Replies)
Discussion started by: mjavalkar
4 Replies
7. Shell Programming and Scripting
I have a script that builds a database ~30 million lines, ~3.7 GB .cvs file. After multiple optimzations It takes about 62 min to bring in and parse all the files and used to take 10 min to remove duplicates until I was requested to add another column. I am using the highly optimized awk code:
awk... (34 Replies)
Discussion started by: Michael Stora
34 Replies
8. Shell Programming and Scripting
Hello,
I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be:
SRVXPAPI001 ERRO JUN24 07:28:34 1775
REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F
... (8 Replies)
Discussion started by: Ferocci
8 Replies
9. Shell Programming and Scripting
Hi All,
Am trying to write wrapper shell/bash script on a utility tool for which i need to pass 2 files as arugment to execute utility tool.
Wraper script am trying is to do with above metion 2 files.
utility tool accepts :
a. userinfo file : which contains username
b. item file : which... (2 Replies)
Discussion started by: Optimus81
2 Replies
10. Shell Programming and Scripting
Hi all,
I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like:
<date1>|<data1>|<url1>|<result1>
<date2>|<data2>|<url2>|<result2>
<date3>|<data3>|<url3>|<result3>
<date4>|<data4>|<url4>|<result4>
What I... (3 Replies)
Discussion started by: pat_pramod
3 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)