Shell Programming and Scripting

Hi all,

I need help in replacing awk with sed for the below.

1 )

Code:

 cat list | awk -F" |," '/MATH/ {sub(/[[:alpha:]]*/,"",$3); print $3}'

Eg: file : list
Sno Subno Name
1 SUB1 ENG
2 SUB2 MATH
2)
Eg:result
Total No of Students: 2

Sno ID Sub
------------------
1 120 ENG
2 2 ENG
3 10 MATH

Here I need no of students

Code:

cat result | awk '/Total/ {print $5}'

the o/p would be : 2
other case , I need the IDs alone

Code:

cat result| awk '{print $2}' | grep '[[:digit:]]' | tr '\n' ' '

The o/p would be : 120 2 10


For the above what can be the possible sed replacements ?

Thanks,
Priya.

No this is not homework. Unfortunately one of the embedded system I work on doesnt support awk.Hence the requirement.


Thanks,
Priya.

one way..

Code:

-bash-3.2$ cat file
Total No of Students: 2
-bash-3.2$ cut -d" " -f5 file
2
-bash-3.2$

-bash-3.2$ cat file2
Sno ID Sub
------------------
1 120 ENG
2 2 ENG
3 10 MATH
-bash-3.2$ grep [[:digit:]] file2 | cut -d" " -f2
120
2
10
-bash-3.2$