SHELL

shell script variable

TEXT="Hello World!"
echo $TEXT
# ouput: Hello World!

command to variable bash

variable=$(command)
# or
variable=`command`

bash command in variable

#Just use following structure to store output of command into a variable:
var=$(command)
#For example:
var=$(echo 'hi')	#store hi into var
var=$(ls)	#store list of files into var

assign a variable in bash

#!/bin/bash
# Naked variables

echo

# When is a variable "naked", i.e., lacking the '$' in front?
# When it is being assigned, rather than referenced.

# Assignment
a=879
echo "The value of "a" is $a."

# Assignment using 'let'
let a=16+5
echo "The value of "a" is now $a."

echo

# In a 'for' loop (really, a type of disguised assignment):
echo -n "Values of "a" in the loop are: "
for a in 7 8 9 11
do
  echo -n "$a "
done

echo
echo

# In a 'read' statement (also a type of assignment):
echo -n "Enter "a" "
read a
echo "The value of "a" is now $a."

echo

exit 0

bash create variable

#create a variable to store name
name="Lance Armah"