1. Shell Programming and Scripting

Hi, I have to update last line of a text file with the number of lines in that file. This last line will have text such as 0.0000 and I should replace this with number lines. If lines are 20 then it should be replaced with 00020. Any sed or awk cmd help would be appreciated (3 Replies)

2. UNIX for Dummies Questions & Answers

Hi I have a file which contains data (list of data) and I want to put a number with bracket 1) 2) 3) etc at the beginning of every successive line I can do it with SED and I can also do it using the nl route but am looking for a different method. I'm guessing I would need some sort of loop... (3 Replies)

3. Shell Programming and Scripting

Hello, I have a file which contains some line as follows, 9.9 TEMP 9.9 MUCOEFF 0.0 EPSILON And I want to increase this MUCOEFF by 0.2 as 9.9 TEMP 10.1 MUCOEFF 0.0 ... (7 Replies)

4. Shell Programming and Scripting

Dear all, I am trying to extract a number from a line in one file (task 1), duplicate another file (task 2) and replace all instances of the strings 300, in duplicated with the extracted number (task 3). Here is what I have tried so far: for ((k=1;k<4;k++)); do temp=`sed -n "${k}p"... (2 Replies)

5. Shell Programming and Scripting

I Have file1 with below lines : #HostNameSelection=0 :NotUsed #HostNameSelection=1 :Automatic #HostNameSelection=3 :NotForced I have file2 which has similar lines but with different values I want to copy the changes from file1 to file2 ,line by line only if line begins with '#'. for... (7 Replies)

6. UNIX for Dummies Questions & Answers

Hi I want to delete a line from a txt file for which the line number is user input. Say when user selects 19, the 19th line would be deleted from the file. Can anyone please provide me with a sed one liner for the same... I tried sed -i. The interaction would be like this Enter the line to... (1 Reply)

7. Shell Programming and Scripting

my file has thousands of line but let me show what i want to achieve... here is one line from that file cat fileName.txt (2,'','user3002,user3003','USER_DATA_SINGLE',1,0,0,'BACKUP',2,NULL,0,450,NULL,NULL,'','2011-05-10... (13 Replies)

8. Shell Programming and Scripting

Hi I want to delete a line from a txt file for which the line number is user input. Say when user selects 19, the 19th line would be deleted from the file. Can anyone please provide me with a sed one liner for the same... I tried sed -i. The interaction would be like this Enter the line... (4 Replies)

9. Shell Programming and Scripting

Sed command to replace a line in a file using line number from the output of a pipe. Is it possible to replace a whole line piped from someother command into a file at paritcular line... here is some basic execution flow.. the line number is 412 lineNo=412 Now i have a line... (1 Reply)

10. UNIX for Beginners Questions & Answers

I'm new with sed, and i am really confused with slashes, backslashes, parentheses, I've tried reading some beginner's guide, but still trouble fixing this problem, do you have any tips where or what to read to learn more about sed? can you also help me with my problem? Note: I was tasked to use... (4 Replies)