08-24-2010
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10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
my input file contains thousands of lines like below
234A dept of education
9788 dept of commerce
8677 dept of engineering
How do i add a delimeter ':' after FIRST 4 CHARACTERS in a line
234A:dept of education
9788:dept of commerce
8677:dept of engineering (7 Replies)
Discussion started by: systemsb
7 Replies
2. Shell Programming and Scripting
Hello,
in my script i have this lines of code in a while cycle:
..
let j=i+1
t_prod_$i = `cat myfile.csv | grep world | cut -d ";" -f$j`
let i+=1
...
So if i try an echo $t_prod_$i at the end of the cycle i cannot see
the right value obtained by `cat myfile.csv | grep world |... (5 Replies)
Discussion started by: drain
5 Replies
3. Shell Programming and Scripting
Hi,
I have a variable $ID=40 and I need to build a string like
40 40 40 40 40 40
so repeating ID 'n' times separated by spaces.
Any help?
Thanks
Sarah (2 Replies)
Discussion started by: f_o_555
2 Replies
4. Shell Programming and Scripting
Hi All,
I need to concatenate the values in the array into a variable. Currently the code is :
for (( i=1 ; i <= $minCount ; i++ ))
do
var="${var}""${sample_file}"
done
The output is :
/tmp/1/tmp/2/tmp/3/tmp/4/tmp/5/tmp/6/tmp/7/tmp/8/tmp/9/tmp/10
I need a space between... (1 Reply)
Discussion started by: sh_kk
1 Replies
5. Shell Programming and Scripting
Hello,
Trying to concatenate the following using bourne shell:
# !/bin/bash
# this works in bash shell e.g. get the results I am expecting
fnTmp=C$cindex.$station_0.$station_1.$station_3.$ts.tmp
#
# under !/bin/sh
# the results are not the same
Any assistance would be... (8 Replies)
Discussion started by: LAVco
8 Replies
6. Shell Programming and Scripting
#! /bin/csh
set tt=12345_UMR_BH452_3_2.txt
set rr=`echo $tt | cut -d_ -f1`
set rr1=welcome
set ff=$rr $rr1
echo $ff
why $ff returned only 12345 and not 12345welcome? thanks (2 Replies)
Discussion started by: jdsignature88
2 Replies
7. Shell Programming and Scripting
Hi,
I have two files.
cat file.txt
a
b
c
d
cat file1.txt
j
k
l
m
I need the output as
a:j (12 Replies)
Discussion started by: nareshkumar522
12 Replies
8. Shell Programming and Scripting
Hi Team!!
Please can anyone tell me why the following line does not work properly?
str3+=$str2
it seems that str3 variable does not keep its value in order to be concatenated in the next iteration! Thus when i print the result of the line above it returns the str2 value
What i want to do is to... (8 Replies)
Discussion started by: paladinaeon
8 Replies
9. Shell Programming and Scripting
Hi,
I was trying to work on a file which had the following data format
1 hi
1 this
1 is
1 john
2 hello
3 test
3 case
the expected output file is the below
1 hi, this, is, john
2 hello
3 test, case
I tried using awk or while read, but I couldnt... (13 Replies)
Discussion started by: karthikbhuvana
13 Replies
10. Shell Programming and Scripting
I have a script which is migrated from AIX to Linux & now while running it is no able to concatenate string values
The string concatenation step under while loop is not displaying desired result
Please find below the piece of code:
while read EXT_FILE ; do
EXT_FILE=$EXT_FILE.ext.sent
echo... (7 Replies)
Discussion started by: PreetArul
7 Replies
LEARN ABOUT REDHAT
foreach
foreach(n) Tcl Built-In Commands foreach(n)
__________________________________________________________________________________________________________________________________________________
NAME
foreach - Iterate over all elements in one or more lists
SYNOPSIS
foreach varname list body
foreach varlist1 list1 ?varlist2 list2 ...? body
_________________________________________________________________
DESCRIPTION
The foreach command implements a loop where the loop variable(s) take on values from one or more lists. In the simplest case there is one
loop variable, varname, and one list, list, that is a list of values to assign to varname. The body argument is a Tcl script. For each
element of list (in order from first to last), foreach assigns the contents of the element to varname as if the lindex command had been
used to extract the element, then calls the Tcl interpreter to execute body.
In the general case there can be more than one value list (e.g., list1 and list2), and each value list can be associated with a list of
loop variables (e.g., varlist1 and varlist2). During each iteration of the loop the variables of each varlist are assigned consecutive
values from the corresponding list. Values in each list are used in order from first to last, and each value is used exactly once. The
total number of loop iterations is large enough to use up all the values from all the value lists. If a value list does not contain enough
elements for each of its loop variables in each iteration, empty values are used for the missing elements.
The break and continue statements may be invoked inside body, with the same effect as in the for command. Foreach returns an empty string.
EXAMPLES
The following loop uses i and j as loop variables to iterate over pairs of elements of a single list. set x {} foreach {i j} {a b c d e f}
{
lappend x $j $i } # The value of x is "b a d c f e" # There are 3 iterations of the loop.
The next loop uses i and j to iterate over two lists in parallel. set x {} foreach i {a b c} j {d e f g} {
lappend x $i $j } # The value of x is "a d b e c f {} g" # There are 4 iterations of the loop.
The two forms are combined in the following example. set x {} foreach i {a b c} {j k} {d e f g} {
lappend x $i $j $k } # The value of x is "a d e b f g c {} {}" # There are 3 iterations of the loop.
SEE ALSO
for(n), while(n), break(n), continue(n)
KEYWORDS
foreach, iteration, list, looping
Tcl foreach(n)