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Worked perfectly, just need to change
mv $i.k $i to mv $i.bk $i and it was great. Thank you

I would like help adding a new column to a large txt file (~10MB) that contains the filename. I have searched other posts but have not found an adequate solution.

I need this extra column so I can...

I am not sure if this is entirely possible, but I want to compare data in a particular column in several .txt files and have a new file generated. I am a biologist with limited unix knowledge. There...

Hi Ahamed and tyler_durden

I think you are right that there is definitely a problem with the files.

Thank you for doing that analysis - way over my beginner unix head!

I performed the...

Thank you Corona688, this stopped the -v invalid option, but the output file is still empty.

This is what I am using, but I am still getting an empty output file.

echo Please input gene name...

Hi Tyler_Durden,

Thank you for your help, unfortunately the script is still not working. I have tried it on the two computers in my laboratory running linux. Here is the command output you...

Thank you so so much Chubler_XL, this is what happened when I ran your script:
Please input gene name you wish to look for
SOD1
awk: invalid -v option

awk: invalid -v option

awk: invalid -v...

So the files all come in this format below:

There is a heading line at the top of each file, and each subsequent line starts with chr. For this example, I would be wanting to identify the lines...

I am a biologist who is new to linux and am having difficulty generating a script to do what I want it to do! I have tried basic grep commands, but even that does not give me back the data I want.
...

So I have this input
1 10327 rs112750067 T C . PASS DP=65;AF=0.208;CB=BC,NCBI
1 10469 rs117577454 C G . PASS DP=2055;AF=0.020;CB=UM,BC,NCBI
1 10492 ...