I am attempting to pass a string into awk and loop through it, and then for every occurrance of a certain character perform an action. In this case, for example, echo 1 for each time character r is found in the string. Except I can't get it to work. Could someone please tell me why?
echo... (7 Replies)
#!/usr/bin/ksh
echo Please enter
while read n
do
echo $n >> datafile
done
question:
How can I enject an if statement that if the users enter 0 (zero) the program will exit?
this is what I have but not working
#!/usr/bin/ksh
echo Please enter number
while read n
do
if $n=0
then... (2 Replies)
Hi,
Again a little problem.
Do not understand good why an empty string is not detected.
Here is the program:
#!/bin/ksh
APR=`date | grep Apr | awk '{print $2$3}'`
MAY=`date | grep May | awk '{print $2$3}'`
JUN=`date | grep Jun | awk '{print $2$3}'`
echo "Variable Apr has value:... (6 Replies)
Hello I am very new to shell and I bought some books and trying to learn it. I started trying to write a script that will take a number and count it down to 1 with commas in between. This number can only be one argument. If lower than one or higher than one argument it sends an error message. ... (4 Replies)
I need to match multiple values in a single column in a file:
example:
Source file:
abd,123,one
def,232,two
ghi,987,six
Target file:
12345,abcde,123
09876,zxvyr,566
56789,lmnop,232
Variable:
var1=`grep 2 sourcefile | awk '{print$1}'
essentially, echo "$var1" would read:... (2 Replies)
Hi,
I'm a rookie who is trying to learn this stuff. What I need help with is putting together a non complicated "while" loop within the below "if" statement. I also need the while loop to keep looping until the user types a key to end the loop. Please reveal the proper insertion points. Thank... (4 Replies)
Hi I am trying to create a table within an awk if statement
awk -F, '{ if ($8 ~ /Match/)
BEGIN{print "<table>"} {print "<tr>";for(i=1;i<=NF;i++)print "<td>" $i"</td>";print "</tr>"} END{print "</table>"}' SN1.csv | mailx -s "Your details" abc@123.com
But this doesnt work..
Please suggest (8 Replies)
Table TAB1 contains following example data (its a tree sitting in table data format & its driven based CHILD & PARENT column pick the RULE condition to generate the below SQL:
CHILD PARENT SS MID MNM VNM RULE FLG
1 ? S1 ? ? V1 rule004 I
2 1 S1 ? ? V1 0 Z
3 1 S1 ? ? V1 1 Z ... (6 Replies)
Hello Frens,
I am a newbie to shell scripting. I need a help on creating a for loop script (shell script) for removing files. I have a table called a_table with column name fil_name which contains all the files that need to be removed.
Thank you in advance (6 Replies)
I have created one file that contains all the necessary info in it to create a download link. In each of the lines /results/analysis/output/Home/Auto_user_S5-00580-6-Medexome_67_032/plugin_out/FileExporter_out.67... (8 Replies)
Discussion started by: cmccabe
8 Replies
LEARN ABOUT REDHAT
join
JOIN(1) FSF JOIN(1)NAME
join - join lines of two files on a common field
SYNOPSIS
join [OPTION]... FILE1 FILE2
DESCRIPTION
For each pair of input lines with identical join fields, write a line to standard output. The default join field is the first, delimited
by whitespace. When FILE1 or FILE2 (not both) is -, read standard input.
-a SIDE
print unpairable lines coming from file SIDE
-e EMPTY
replace missing input fields with EMPTY
-i, --ignore-case ignore differences in case when comparing fields
-j FIELD
(obsolescent) equivalent to `-1 FIELD -2 FIELD'
-j1 FIELD
(obsolescent) equivalent to `-1 FIELD'
-j2 FIELD
(obsolescent) equivalent to `-2 FIELD'
-o FORMAT
obey FORMAT while constructing output line
-t CHAR
use CHAR as input and output field separator
-v SIDE
like -a SIDE, but suppress joined output lines
-1 FIELD
join on this FIELD of file 1
-2 FIELD
join on this FIELD of file 2
--help display this help and exit
--version
output version information and exit
Unless -t CHAR is given, leading blanks separate fields and are ignored, else fields are separated by CHAR. Any FIELD is a field number
counted from 1. FORMAT is one or more comma or blank separated specifications, each being `SIDE.FIELD' or `0'. Default FORMAT outputs the
join field, the remaining fields from FILE1, the remaining fields from FILE2, all separated by CHAR.
AUTHOR
Written by Mike Haertel.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO
The full documentation for join is maintained as a Texinfo manual. If the info and join programs are properly installed at your site, the
command
info join
should give you access to the complete manual.
join (coreutils) 4.5.3 February 2003 JOIN(1)