Expr:non-numeric argument

Today to do a calculation, the script is as follows:

#!/bin/bashhit=$ (/app/local/redis/bin/redis-cli-h 127.0.0.1-p 6379 info | grep "keyspace_hits" | awk-f ': ' {print $} ') miss=$ (/app/local/redis/bin/redis-cli-h 127.0.0.1-p 6379 info | grep "keyspace_misses" | awk-f ': ' {print $} ') All= ' exp R $HIT + $MISS ' echo $all

Run Error:expr:non-numeric argument, the final various tests, alone to hit and miss assignment, no error, that is, do not know where the reason, view run verbose mode:

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Look carefully, behind the "\ R", thinking it is the problem of coding

# cat-v 1.sh #!/bin/bashhit=$ (/app/local/redis/bin/redis-cli-h 127.0.0.1-p 6379 info | grep "keyspace_hits" | awk-f ': '  ' {print $} ') miss=$ (/app/local/redis/bin/redis-cli-h 127.0.0.1-p 6379 info | grep "keyspace_misses" | awk-f ': ' {print All= ' expr $HIT + $MISS ' echo $all

Did not find where there is a problem, forget it, or first turn it:

Yum Install Dos2unix

Turn format:

# Dos2unix 1.sh dos2unix:converting file 1.sh to UNIX format ...

Do it again, or not:

# sh 1.sh expr:non-numeric argument

I want to try and delete the "\ r".

Sed-i "" s/\r//"" 1.sh

Execute or not:

# sh 1.sh expr:non-numeric argument

Finally dawned, "\ r" is the result of the calculation brought out!!!

To modify a script:

# vim 1.sh #!/bin/bashhit=$ (/app/local/redis/bin/redis-cli-h 127.0.0.1-p 6379 info | grep "keyspace_hits" | awk-f ': ' { Print $} ') miss=$ (/app/local/redis/bin/redis-cli-h 127.0.0.1-p 6379 info | grep "keyspace_misses" | awk-f ': ' {print $ } ') echo $HITecho $MISSHIT 1= ' echo $HIT | Tr-d ' \ R ' miss1= ' echo $MISS | Tr-d ' \ r ' all= ' expr $HIT 1 + $MISS 1 ' echo $all

Re-execution:

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Really fuck the dog, unexpectedly this small problem, wasted me half an hour, so to be serious!

This article is from the "take a deep Breath again" blog, make sure to keep this source http://ckl893.blog.51cto.com/8827818/1891323

Expr:non-numeric argument