I have a variable which consists of a string like this:
001 aaabc 44 a bbb12
How do I extract each substring, delimited by the spaces, into new variables - one for each substring?
eg var1 will be 001, var2 will be aaabc, var3 will be 44, var4 will be a, etc?
I've come up with this:... (2 Replies)
Somehow I can't get it for this basic bash problem. maybe someone can help.
What I try to do is:
a="world"
b="hello"
how can I move this into $c so that I can replace "helloworld" with "world hello" in sed like:
sed "s/\helloworld/ ${c}...
I tried several combinations but all with... (4 Replies)
suppose I have a file named abc.txt.The contents of the file is sited below
abc.txt
maitree,test,test3
Using awk command can I store these 3 values in 3 different variable and in one single line command of awk.
suppose variable a b c is there.
I don't want like this
a=`awk -F"," '{print... (2 Replies)
Hello, I am a new joiner to the forum, and have what i hope is a simple question, however I can't seem to find the answer so maybe it is not available within bash scripting.
I intend to use the below script to archive files from multiple directories at once by using a loop, and a variable (n)... (10 Replies)
Hello,
Here is my problem using KSH
I have a set of compound variables, let say cmp_var1 cmp_var2
The names of these variables are stored in an indexed array.
How can I access the subfields of these compound variables ?
I tried:
set -A cmp_varnames=(cmp_var1 cmp_var2)
for cmp in... (4 Replies)
Experts,
I want to set value of variables like this in bash shell:
i=5 ; L=100
I want variable d5 (that is d(i) ) to be assign the value of $L ,
d$i=$L ; echo $d5
Not working
Thanks., (3 Replies)
Hello,
Can you please help here?
DAY=$1
MONTH_MONDAY_YEAR = 1 2 3 4
for i in ${MONTH_${DAY}_YEAR}
do
echo ${i}
done
./test.sh MONDAY
./test.sh: line 3: MONTH_MONDAY_YEAR: command not found
./test.sh: line 10: ${MONTH_${DAY}_YEAR}: bad substitution (6 Replies)
Hi,
I am having a bit of trouble with the below code:
file=/path/to/file
for i in 03 06 07 21; do
if ; then
eval count$i=`grep -c word $file-$i`
fi
done
Totalcount=0
for i in 03 06 07 21; do
if ; then
echo $count$i variable not exist;
else Tcount=`expr $Tcount + $count$i`;
fi... (3 Replies)
Hi Guys,
I was scratching my head for this for half a day... finally not successful :confused:
Following is the problem
I have a variable
$ var1=123
$ var2-234
$ var3=345
and another Variable
$ i=1
Now i wanted to save these into a Variable as shown below
for i in 1 2 3
do... (5 Replies)
Dear Forum members,
I am having trouble getting the complete filename (and directory path) in a variable.
Output directory mentioned in the code have three files:
DISPLAY_CITY_DETAILS_15-05-2019-08-29-26_MIGRATE_london.out
DISPLAY_CITY_DETAILS_15-05-2019-08-29-26_MIGRATE_paris.out... (4 Replies)
Discussion started by: chetanojha
4 Replies
LEARN ABOUT REDHAT
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 locals.) 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.
SEE ALSO
global(n), namespace(n), upvar(n)
KEYWORDS
global, namespace, procedure, variable
Tcl 8.0 variable(n)