shell script - diff command - "diff: missing operand after `diff' "

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In diff command am getting following error. Kindly assist how can I specify I want to see difference in two files:

#current_unavail=ranjith

root@iitmserver1 tmp]# cat /tmp/ran
ranjith
[root@iitmserver1 tmp]#

#test=$(cat /tmp/ran)

error which I am getting

[root@iitmserver1 tmp]# diff `$current_unavail` `$test`
diff: missing operand after `diff'
diff: Try `diff --help' for more information.
[root@iitmserver1 tmp]#

asked 1 min ago

ranjith

18

shell script - diff command - "diff: missing operand after `diff' "