Stuff
public text v1 · immutable$ string="2400/1001"
$ echo $string
2400/1001
$ expr "$string" : '\([0-9]....\/[0-9]...\)'
24000/1001
$ string="demux_mpg 24000/1001fps"
$ expr "$string" : '\([0-9]....\/[0-9]...\)'
The above matches nothing.$ string="2400/1001"
$ echo $string
2400/1001
$ expr "$string" : '\([0-9]....\/[0-9]...\)'
24000/1001
$ string="demux_mpg 24000/1001fps"
$ expr "$string" : '\([0-9]....\/[0-9]...\)'
The above matches nothing.