UNIX for Dummies Questions & Answers

Hello, I have a file with 10,000+ records which look like this:

Image3992170.tif 4/21/200811:42:09AM 3,373.13KB
Image3993265.tif 4/11/20087:17:58PM 2,369.72KB
Image3996764.tif 5/2/200811:01:28AM 2,155.87KB
Image3997700.tif 5/2/200811:21:50AM 2,221.54KB
Image4016441.tif 5/30/20081:12:50PM 92.97KB
Image4021074.tif 4/17/20087:22:35PM 183.92KB
Image4021620.tif 4/23/200810:37:53AM 74.75KB

I need this file to have only image names like this (without a space in front of it):

Image3992170.tif

I am not very good in Unix, please help! Thank you!

start with reading the doc. man cut, or man awk. alternatively, see here

Yeah, only I got to extract these images and construct a script and run it before 12 am tonight in my Prod env. I really have no time to read man files. Not trying to be an ass, just very pressed for time. I usually work in windows environemnt and I am not an admin. If anyone can please give me a quick tip of how to accomplish what I need I would greatly appreciate it. Thank you!

Couple of questions:

1) why would you put something to a prod env. that wasn't tested
2) why would anyone let you if you're not an admin

If all you want is the image (.tif) name, then extract it. You can use awk, sed, cut or whatever to do this.

Code:

awk '{print $1}' file > new_file
cp -f new_file file # cp rather than mv to preserve privileges of original file
rm new_file

I'm guessing
a) that's what you asked
b) I'm too late

Try this.
sed -n 's/^\([^ ]*[ ]\).*$/\1/pw xxx.tmp' temp.txt
It is assumed that "temp.txt" is the input file.
This will create a file xxx.tmp with the required data.
This will save a step of creating and later deleting files.
Of course, CUT will be most simplest, but as suggested above see the man command. Should not take more than 5 minutes.