Hi,
Can anyone advise me on how to use array on Bash? I am really confuse in how eval is link to array... What i wan to do is let say i have an index of an array of 50. Store either 'N' or 'Y' or "NA" in each index. how to i go about doing it.. then lastly how to i print all the values out in... (2 Replies)
Hello,
I am trying to use the awk getline command to populate an array from a flat file.
Has anyone done this before?
So we have file1:
a
b
c
d
I want to create an array like index that contains these four elements (8 Replies)
I want to get a status code array for the commands in eval.
For example,
eval "ls abc; ls def; ls $HOME"
I want to get the status code for each ls command in eval. Is there any way to make it?
Thanks. (2 Replies)
I try to get a number of elements in an array, using dynamic array name.
I need the array name to be dynamic.
The array name is constructed as 'inf_ln_$nmb', where $nmb is a file line number
So, say I have the arr 'inf_ln_4':
> for (( el=0; el<${#inf_ln_4}; el++ )); do
> echo "$el:... (1 Reply)
I am trying to write a script that runs another script consecutively and records the PID of the called script each time it runs in an array.
I put in an echo statement to check the PID, when the script runs no PID is output, and the array seems to be empty. I assume it is problem with my code,... (3 Replies)
Hi all,
some small script with eval turned me to crazy.
my OS is linux
Linux s10-1310 2.6.16.53-0.8.PTF.434477.3.TDC.0-smp #1 SMP Fri Aug 31 06:07:27 PDT 2007 x86_64 x86_64 x86_64 GNU/Linux
below script works well
#!/bin/bash
eval ssh remotehost date
eval ssh remotehost ls
below... (1 Reply)
Hi Guys,
I've got a script that runs and collects statistics from one of our machines and outputs the data into a csv file. Now, that script runs fine and I managed to create another one (with a lot of help from this forum!!) to trim the csv file down to all the data that I need, rather than all... (9 Replies)
I have a question on how can I assign a output of a function to a variable which is executed in background.
Here is my example
$ cat sample_program.sh
#!/bin/ksh
exec_func () {
sleep 1
v=`expr $1 + 100`
print $v
}
export OUT_ARR
date
for i in 1 2
do
OUT_ARR=`exec_func $i` &... (1 Reply)
Discussion started by: mohan_kumarcs
1 Replies
LEARN ABOUT OSX
variable
variable(n) Tcl Built-In Commands variable(n)
__________________________________________________________________________________________________________________________________________________NAME
variable - create and initialize a namespace variable
SYNOPSIS
variable ?name value...? name ?value?
_________________________________________________________________DESCRIPTION
This command is normally used within a namespace eval command to create one or more variables within a namespace. Each variable name is
initialized with value. The value for the last variable is optional.
If a variable name does not exist, it is created. In this case, if value is specified, it is assigned to the newly created variable. If
no value is specified, the new variable is left undefined. If the variable already exists, it is set to value if value is specified or
left unchanged if no value is given. Normally, name is unqualified (does not include the names of any containing namespaces), and the
variable is created in the current namespace. If name includes any namespace qualifiers, the variable is created in the specified names-
pace. If the variable is not defined, it will be visible to the namespace which command, but not to the info exists command.
If the variable command is executed inside a Tcl procedure, it creates local variables linked to the corresponding namespace variables (and
therefore these variables are listed by info vars.) In this way the variable command resembles the global command, although the global
command only links to variables in the global namespace. If any values are given, they are used to modify the values of the associated
namespace variables. If a namespace variable does not exist, it is created and optionally initialized.
A name argument cannot reference an element within an array. Instead, name should reference the entire array, and the initialization value
should be left off. After the variable has been declared, elements within the array can be set using ordinary set or array commands.
EXAMPLES
Create a variable in a namespace:
namespace eval foo {
variable bar 12345
}
Create an array in a namespace:
namespace eval someNS {
variable someAry
array set someAry {
someName someValue
otherName otherValue
}
}
Access variables in namespaces from a procedure:
namespace eval foo {
proc spong {} {
# Variable in this namespace
variable bar
puts "bar is $bar"
# Variable in another namespace
variable ::someNS::someAry
parray someAry
}
}
SEE ALSO
global(n), namespace(n), upvar(n)
KEYWORDS
global, namespace, procedure, variable
Tcl 8.0 variable(n)