Hello Experts!
I've become perplexed as to why I can't get this to work and have given up the male "I can do it" attitude. I am asking the unix experts.
The script I am writing involves reading a file that contains thousands of keywords (not csv), just one line after another of keywords and... (1 Reply)
Hi,
When I invoke a script s1.sh it will call an another script s2.sh by itself. This script s2.sh will call some java files, so while running the script it asks for a file name to be processed. Which we can see in the screen.
The file name to be processed is present in script s1.sh
Now... (1 Reply)
Hi,
When I invoke a script s1.sh it will call an another script s2.sh by itself. This script s2.sh will call some java files, so while running the script it asks for a file name to be processed. Which we can see in the screen.
The file name to be processed is present in script s1.sh
Now I... (2 Replies)
Hi,
i have a script which need to do behave differently when run as a startup process from init.d/ rc2.d script and when run manually from shell.
How do i distinguish whether my script is run by init process or by shell??
Will the command
/proc/$$/psinfo | grep "myscript" work well???... (2 Replies)
Hi, I have a text file with 1500 words. Could it be a script that will keep the words that only have all these letters:
n i o m s c t a
If you could show me the way I would be greatful! (32 Replies)
Hi
I'm trying to run a script " abc.sh" which triggers "use.sh" .
abc.sh is nothing but a "expect" script which provides username and password automatically to the use.sh script.
Please find below the scripts:
#abc.sh
#!/usr/bin/expect -f
exec /root/use.sh
expect "*name*"
send... (1 Reply)
I have a shell script (.sh) and I want to pass a parameter value to the awk command but I am getting exception, please assist.
diff=$1$2.diff
id=$2 new=new_$diff
echo "My id is $1"
echo "I want to sync for user account $id"
##awk command I am using is as below
cat $diff |... (1 Reply)
I was just wondering if there is a way to pass an new option or argument to an already running command or program. Let us say you run "zenity --list <options>" and you like to add a title or change the title you used on it while it is already running, is it possible to do that? (1 Reply)
Hi,
I have a requirement for creating a MQ (queue) where the inputs has to be passed as arguments.
Running the script as below
./hi.sh "Servername" "QueueManagername" "QueuecreationCommand"
cat hi.sh
echo "Welcome to $1"
runmqsc $2 < $3
But the queue creation command is... (9 Replies)
I sux at this type of stuff. I have a huge wordlist. I want to get rid of everything in each word except the letters. I want to remove numbers and all special characters. And since this list was created using cewl I some how picked up something like so Latin characters and would like to remove them... (6 Replies)
Discussion started by: sub terra
6 Replies
LEARN ABOUT CENTOS
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
This loop prints every value in a list together with the square and cube of the value:
set values {1 3 5 7 2 4 6 8} ;# Odd numbers first, for fun!
puts "Value Square Cube" ;# Neat-looking header
foreach x $values { ;# Now loop and print...
puts " $x [expr {$x**2}] [expr {$x**3}]"
}
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)