how to create incremental files with version in shell - shell

Question

how to create files dynamically when i run shell script.
Intially in the /tmp folder i need to check if file like(CFT_AH-120_v1.txt) exist in tmp folder else create CFT_AH-120_v1.txt. Next time when i run shell script it should create CFT_AH-120_v2.txt and in each run it should increment the version number of the file.
In tmp folder i should have files like
CFT_AH-120_v1.txt
CFT_AH-120_v2.txt
CFT_AH-120_v3.txt
i will get CFT_AH-120 from variable dynamically.
#!/bin/bash
export filename
temp=$(find CFT_AH-120-V* | sort -V | tail -1)
if [ -e $temp ]
then echo "ok"
echo $temp
fname="${temp%.*}"
echo $fname
temp1="${temp%[[:digit:]]*}$((${temp##*[[:alpha:]]} + 1))"
echo $temp1
touch $temp1 ".txt"
else
touch CFT_AH-120-V1.txt
echo "nok"
fi

Answer 1

I am not sure the exact requirement for you. As per my understanding this is a simple way of approach.
#!/bin/bash
file_temp=$(find . -name "CFT_AH-120-V*" -type f | sort -V | tail -1)
echo $temp
if [ -z "$temp" ]; then
echo "File not found!"
else
num_temp=$(echo $temp | cut -d '-' -f3- | sed 's/V//')
num_value_incr=$(expr $new_temp + 1)
touch "CFT_AH-120-V$num_value_incr"
echo "New file created!"
fi
Note: This code search for the largest value of the "V"....number.... (eg.***V120) and increment based on that value and also the intermediate number wont be increment. If you need the missing numbers to be created, then the logic for this code needs to be changed.
Hope this might help you!