How to make AWK use the variable created in Bash Script [duplicate]

Answer 1

The easiest way is to make an awk variable. awk -v awkvar=$bashvar 'awkscript'.

Answer 2

Assuming you run awk as the sub process of the shell you declared the vars
Within the shell

export MY_VARS="whatever"; #// IT NEEDS to be exported, to allow the sub process awk read access.
echo ""| awk '{
    print "Reading values from within awk : "ENVIRON["MY_VARS"];
}'

Result:

Reading values from within awk : whatever

notice the importance of export. With out it, the vars from the shell is considered local and does not get passed to the co-processes.

Answer 3

The reason is that bash variables (environment variables) are not expanded within single-quoted strings. Try replacing

'{print $basen "\t" $3}'

with

"{print \"$basen\" \"\t\" \$3}"

Answer 4

You can use it like this.

for i in `find $1 -name \*.jar`
do
jar tvf $i| awk -F '/' '/class/{print "'${i}'" " " $NF }' >> $classFile
done

You should use

"'${i}'"

in AWK to use the

$i

created in Bash Script.

Answer 5

you can just do everything in awk

awk '{gsub(".txt","",ARGV[1]);print ARGV[1] "\t" $3}' inputfile.txt

Answer 6

The -v flag is for setting variables from the command line. Try something like this:

awk -v "BASEN=$basen" '{print BASEN "\t" $3}'