Hi,
I'm having some trouble with the syntax in constructing a simple nested 'for' loop.
My code is as follows:
#!/bin/bash
dir1="fred flume haystack"
for dir2 in ${dir1}
do
fred="1 2 3"
flume="a b c"
... (7 Replies)
Hello members,
I'm working on the Solaris environment and the DB i'm using is Oracle 10g.
Skeleton of what I'm attempting;
Write a ksh script to perform the following. I have no idea how to include my sql query within a shell script and loop through the statements. Have therefore given a... (4 Replies)
Hi
I am very new to Unix programming and shell scripting. I am trying t figure out how to write a little script that will output the number of directories. I can find the number of directories using ls -l | grep "^d" | wc -l I can not figure out how to do it so when I type the name... (8 Replies)
Hello,
I'm a shell scripting noob and new to this forum as well. My question is can nested if statements be done with && and || instead and if it can be done can someone provide an example pls.
Thanks in advance for the help (1 Reply)
Hi,
assume there are some dir structure like -
I need to write a script to create 5 new directories under 'qwe' dir of all the above 3 dir structures. these 5 dir will have same name.
I don't want to use 15 mkdir statements. i just want to write 5 mkdir statemets and use them 3 times. I... (10 Replies)
Hi guys,
Two problems I need solving please. I created a script where the user types in 7 numbers as standard input and each one is then stored in an array. Now I need to perform the following calculations on those numbers:
1) Use a while loop to determine the largest number in the range.
... (2 Replies)
Hello all,
I am writing up an input file and I was hoping I could get some guidance as to how to best consolidate these 2 awk statements for 1 while loop.
Here's my input file
# cat databases.lst
#NOTE: These entries are delimited by tabs "\t"
#oracleSID name/pass
#
db11 ... (2 Replies)
Hello again everyone,
yes, I'm back again for more help! So I'm attempting to read two separate files and generate some XML code from that. My current code is:
BEGIN {
print "<?xml version=\"1.0\" encoding=\"utf-8\">"
print "<Export>"
}
{
x=1;
print "<section name=\"Query" NR "\">"... (5 Replies)
Hi everyone!
I'm having difficulties setting up a complex script with nested if statements while doing some word extracts, any help is appreciated.
Scenario:
1- Check if the file.txt has the word BINGO
2- If so then get the available number (any number) in the line that contains the word... (8 Replies)
I am trying to parse a text file and send its output to another file but I am having trouble conceptualizing how I am supposed to do this in awk.
The text file has a organization like so:
Name
Date
Status
Location (city, state, zip fields)
Where each of these is on a separate line in... (1 Reply)
Discussion started by: kellyanneghj
1 Replies
LEARN ABOUT REDHAT
for
for(n) Tcl Built-In Commands for(n)
__________________________________________________________________________________________________________________________________________________NAME
for - ``For'' loop
SYNOPSIS
for start test next body
_________________________________________________________________DESCRIPTION
For is a looping command, similar in structure to the C for statement. The start, next, and body arguments must be Tcl command strings,
and test is an expression string. The for command first invokes the Tcl interpreter to execute start. Then it repeatedly evaluates test
as an expression; if the result is non-zero it invokes the Tcl interpreter on body, then invokes the Tcl interpreter on next, then repeats
the loop. The command terminates when test evaluates to 0. If a continue command is invoked within body then any remaining commands in
the current execution of body are skipped; processing continues by invoking the Tcl interpreter on next, then evaluating test, and so on.
If a break command is invoked within body or next, then the for command will return immediately. The operation of break and continue are
similar to the corresponding statements in C. For returns an empty string.
Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the for command starts execut-
ing, which means that variable changes made by the loop body will not be considered in the expression. This is likely to result in an
infinite loop. If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter-
ation), so changes in the variables will be visible. For an example, try the following script with and without the braces around $x<10:
for {set x 0} {$x<10} {incr x} {
puts "x is $x"
}
SEE ALSO
break, continue, foreach, while
KEYWORDS
for, iteration, looping
Tcl for(n)