Software >> OS >> Unix >> Shell >> bash >> How use while and read to process data from an input file

 
## Example 1 - /var/tmp/titles.txt contain mutiple lines of multi-word strings
## to process each line as a single argument i.e. for the script

while read -r line;do echo ./yourscript.sh "$line";done < /var/tmp/titles.txt


## Example 2 - read selected parameters from a comma separated file and run a script with that parameter as argument

cat /var/tmp/data.txt
12588,ca010001
12592,ca010002
12605,ca010003
12627,ca010004
12639,ca010005

while IFS=, read arg1 arg2;do echo "runsomescript.sh $arg2";done < /var/tmp/data.txt
runsomescript.sh ca010002
runsomescript.sh ca010003
runsomescript.sh ca010004
runsomescript.sh ca010005
runsomescript.sh ca010006