Any reason why this thing doesn't works in Korn Shell
for (( expr1; expr2; expr3 ))
do
..... ... repeat all statements between do and done until expr2 is TRUE Done
Rgds,
TS
Assuming your version of the Korn shell handles ((...)) in for loops, you've got the logic backwards.
executes the specified statements each time expr2 evaluates to TRUE and leaves the loop when expr2 evaluates to FALSE. For example:
produces the output:
because i<5 is true the 1st four times through the loop.
hi all,
got this silly problem and i just can't seem to make sense of the error message its is saying 1400: cannot open. its my first time at writing a while loop but tried all sorts to get it working without success.
#!usr/bin/ksh
integer max=1400
set file="afilename"
integer i=1
... (3 Replies)
Hi ALL,
I need to take some command line arguments for my script and then want to run a function for each argument.I thought of using for loop as below, but its not working , can some one please help...
#!/bin/ksh
lpar1=$1
lpar2=$2
lpar3=$3
lpar4=$4
lpar5=$5
echo "$lpar1" >>lpar.txt
echo... (4 Replies)
Hi,
I want to write a while loop like this can any one say me whats wrong with my loop
USAGE="Usage: Mail.ksh"
integer i=3
while ((1<i<=3))
do
.
.
.
.
(( CMD_JUL = LSD_JUL - i ))
CUR_MAINT_DATE=$(julian2date ${CMD_JUL})
.
.
.
i=i-1
done (1 Reply)
hi all,
i have a for loop statement in my ksh code. it only returns the first value retrieved not the value for the other rows.
ex: acct_id value = returned value in the for loop
1 = 1
2 = 1 (instead of 2)
3 = ... (1 Reply)
Hi,
I 'm trying to send an e-mail for every different line in the .txt
for i in {1..$variable}
do
sed -n "/$i$/p" text.txt
done
I have two problems about this.
First one is that for loop doesn't work
and the second one is that i cant get the output of sed (4 Replies)
Hi ,
I'm writing the for loop script in home directory and wanted to get the files from /etc/data directory.
#!/bin/ksh
file_nm="/etc/dat"
for test_data in $file_nm/fln*
do
echo "$test_data"
done
the code is executing successfully , but in the output it is showing
... (6 Replies)
Hi, I am new to UNIX. I am working on a script where it takes the input and produces a desired output and it works fine for one instance.
Input(One Instance):
CREATE TABLE TAB1
(
COL1,
COL2
);
CREATE UNIQUE INDEX XPKTAB1
(
COL1
)TAB1;
Output:
CREATE TABLE TAB1
(
COL1,
COL2... (8 Replies)
Hi All,
I'm trying to write while loop with multiple if conditions. Each and every if condition with different variables. whenever one if condition fails i have remove the file
from filename and have to pick another file and loop should exit until the last file found in filename. Please help... (4 Replies)
while ];do
first=${hat}
echo "${first}"
b=$((b+1))
a=$((a+5))
done
I'm trying to append values from the indicated index of one array to other, but it gives me an error with while loop....suggesting that .......
In the hat array, it contains many values... (2 Replies)
Discussion started by: TestKing
2 Replies
LEARN ABOUT SUSE
if
if(n) Tcl Built-In Commands if(n)
__________________________________________________________________________________________________________________________________________________NAME
if - Execute scripts conditionally
SYNOPSIS
if expr1 ?then? body1 elseif expr2 ?then? body2 elseif ... ?else? ?bodyN?
_________________________________________________________________DESCRIPTION
The if command evaluates expr1 as an expression (in the same way that expr evaluates its argument). The value of the expression must be a
boolean (a numeric value, where 0 is false and anything is true, or a string value such as true or yes for true and false or no for false);
if it is true then body1 is executed by passing it to the Tcl interpreter. Otherwise expr2 is evaluated as an expression and if it is true
then body2 is executed, and so on. If none of the expressions evaluates to true then bodyN is executed. The then and else arguments are
optional "noise words" to make the command easier to read. There may be any number of elseif clauses, including zero. BodyN may also be
omitted as long as else is omitted too. The return value from the command is the result of the body script that was executed, or an empty
string if none of the expressions was non-zero and there was no bodyN.
EXAMPLES
A simple conditional:
if {$vbl == 1} { puts "vbl is one" }
With an else-clause:
if {$vbl == 1} {
puts "vbl is one"
} else {
puts "vbl is not one"
}
With an elseif-clause too:
if {$vbl == 1} {
puts "vbl is one"
} elseif {$vbl == 2} {
puts "vbl is two"
} else {
puts "vbl is not one or two"
}
Remember, expressions can be multi-line, but in that case it can be a good idea to use the optional then keyword for clarity:
if {
$vbl == 1 || $vbl == 2 || $vbl == 3
} then {
puts "vbl is one, two or three"
}
SEE ALSO
expr(n), for(n), foreach(n)
KEYWORDS
boolean, conditional, else, false, if, true
Tcl if(n)