Read multiple files in a Bash loop simultanously

crulat

1. 
   
2. #!/bin/bash
   
3. 
   
4. (( $# == 0 )) && exit 1
   
5. 
   
6. file=(${@})
   
7. ((len=${#file[@]}-1))
   
8. 
   
9. loop()
   
10. {
    
11.    for((i=0; i<len+1; ++i)); do
    
12.       ((fd=i+10))
    
13.          ${1}
    
14.    done
    
15. }
    
16. 
    
17. create.fd()
    
18. {
    
19.    eval exec "${fd}<${file[i]}"
    
20.    read=("${read[@]}" read "-u" "${fd}" line${i} "&&")
    
21. }
    
22. 
    
23. destroy.fd()
    
24. {
    
25.    eval exec "${fd}<&-"
    
26. }
    
27. 
    
28. loop create.fd
    
29. 
    
30. while eval "${read[@]:0:${#read[@]}-1}"; do
    
31.    eval echo $(eval echo \\\${line{0..${len}}} | sed -e 's#\$#\"\$#g; s#}#}\"#g')
    
32. done
    
33. 
    
34. loop destroy.fd
    

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shplpy

thx~

Shell_HAT

文件行数互不相同的时候肿么办？

crulat

回复 4# Shell_HAT

以最少行的为准