Shell Programming and Scripting

Code:

csm@csm-HP-Z420:~/Desktop/sequences/sequences to extract for fold$ awk 'FNR==NR {T[$1];next} $1 in T {P=NR+1} NR<=P' only_ids.txt sequences.fasta > hkm
csm@csm-HP-Z420:~/Desktop/sequences/sequences to extract for fold$

now it is showing no error but still it generates the empty output file.

---------- Post updated at 01:30 AM ---------- Previous update was at 01:28 AM ----------

This does NOT help us help you. The script works on my system, so we need to find out what is different on the two systems. That's why you NEED to supply an answer to Don Cragun's question
, and on top, the output of e.g. the file command:

Code:

file  file1 file2 ids.txt only_ids.txt sequences.fasta hkm

and/or the output of

Code:

od -tcx1

for each of your input files.

As long as you don't show anything relevant, I won't be able to help further.

Thanku all I am working very smoothly with your scripts!!!