Please unzip the file which download from :
http://s.yunio.com/MT3r2x
The data format is :
‘x + y’ x plus y
‘x - y’ x minus y
‘x*y’ juxtapose x and y
‘x/y’ x forwardslash y
‘x %+-% y’ x plus or minus y
For
cut -c 1-43 maths.txt
The output is :
‘x + y’
‘x - y’
‘x*y’
‘x/y’
‘x %+-% y’
For
cut -c 44- maths.txt
The output is :
x plus y
x minus y
juxtapose x and y
x forwardslash y
x plus or minus y
The two fields are what i want to get.
Why i can't use the following command to cut it into two fields?
cut -d' ' -f2 maths.txt or cut -d' ' -f2 maths.txt(ctrl+v+tab) can do neither.
Your cut -d' ' -f2 maths.txt or cut -d' ' -f2 maths.txt(ctrl+v+tab) are working. The problem is that they print the text in each line after first space and before second one. As you have a lot of spaces, it just shows spaces.
What you can do is to cat the original one and pipe it using col like this:
cat maths.txt | col | cut -d$'\t' -f1 # first col
cat maths.txt | col | cut -d$'\t' -f2 # second col