UNIX for Advanced & Expert Users

Hi, can anyone please answer my question in deleting the rest of the line. I have an example below of a file contaning:

Serial3/1.5 43.70.195.13 YES NVRAM down down
Serial3/3 225.94.155.69 YES NVRAM up down
Serial3/6 unassigned YES NVRAM administratively down down
Serial3/7 unassigned YES NVRAM up down
ATM2/0 unassigned YES NVRAM up down


My question is how do I delete the rest of the line except the first word from each line.

My result should be
Serial5/1.5
Serial3/3
Serial 3/6
.
.
.


Regards,
Aejaz

Hi,

You'll get the same output using the awk. You can also get the output of first words in firstword.txt

your command.... | awk {' print $1'} | tee firstword.txt

For example, if you want to get only the first word in uptime. use

$ uptime | awk {' print $1'}
01:59:45

cat file | awk '{print $1}'

Thanks to all.
Sanjay it worked.