1. UNIX for Dummies Questions & Answers

hi... i want to extract single row from a file at a time and i don't want to specify which row to be extracted in the command. i mean i want to use a loop, so that i will fetch all the rows one after the another. i used sed -n '$count p' filename but this is not working. please give me the... (2 Replies)

2. Shell Programming and Scripting

Hello Everyone, i have quick question. I have file names like: bin_map300.asc and I would like to extract grid300. My approach so far: name=bin_map300.asc echo ${name%%.*} echo ${name##*_} I am stuck combining the two. Any help would be appreciated. (3 Replies)

3. Shell Programming and Scripting

File A aa <space> --D--A--D---DDY---M--UM-M--MY Another file D3 M9 So output shud be Here in FileA D which is 3 after removing dash after we have counted dash D is position at 9 and for M is 23 final output will be D9 M23 (2 Replies)

4. Shell Programming and Scripting

is there another way of doing the below: echo "7 3 8 2 2 1 3 83.4 8.2 4 8 73 90.5" | bc shell is bash. os is linux and sunos. bc seems to have an issue with long range of numbers (12 Replies)

5. UNIX for Dummies Questions & Answers

I have a spreadsheet of extremely long rows of numbers. I want to print only the last column. Tried using printf but there seems to be too many rows. example: 3 100 34 7 23 0 8 ..... X 400 203 778 1 ..........Y 58 3 9 0 100 ..........Z I only want to print X, Y and... (1 Reply)

6. Shell Programming and Scripting

Hi I am part of a academic organization and I want to send a fax to the students however there must be a quicker way to get the fax numbers extracted from the online forms they sent me. The file looks like this (numbers are fake in order to protect identity): Biochemistry Major Michael... (3 Replies)

7. Shell Programming and Scripting

I am extracting a number of key/value pairs in awk using following: awk ' /xyz_session_id/ { n=index($0,"xyz_session_id"); id=substr($0,n+15,25); a=$4; } END{ for (ix in a) { print a } }' I don't like this Index + substr with manually calculated... (5 Replies)

8. Shell Programming and Scripting

the following is used to add numbers: echo 7 47 47 44 4 3 3 3 3 3 | awk '{ for(i=1; i<=NF;i++) j+=$i; print j; j=0 }' how do i multiply OR subtract a row of numbers using the above tactic? (8 Replies)

9. Shell Programming and Scripting

In a huge log file (43MB, 43k lines) I am trying to extract data between two tag pairs on same line and export it to a file so I can pull it into Excel for a report. One Pair is <Text>data I need</Text> Other pair follows on same line and is <TimeStamp>more data I need</TimeStamp> I would need... (2 Replies)

10. Shell Programming and Scripting

Need help in coding: File with several rows incl. numbers like 1 2 3 4 5 6 7 8 ... How can i build the sum of each row seperately? 10 26 ... Thx for help. Please use CODE tags as required by forum rules! (13 Replies)