1. Programming

Hi, experts, I would like to create a function that can calculate the total number of lines in a saved text file and delete specific lines in that particular file (I only want the last few lines). Hav anybody have the experience and giv me a hand in this? (9 Replies)

2. Shell Programming and Scripting

hello all I have bunch of files containing lines of text that surrounding by <# .......#> tags I like to delete this lines from the text files whiteout open the files , can it be done with sed ? or other unix tool (perl mybe )? (2 Replies)

3. Shell Programming and Scripting

Hello, Hello Firends, I have file like below. I want to remove selected blocks say abc,pqr,lst. how can i remove those blocks from file. zone abc { blah blah blah } zone xyz { blah blah blah } zone pqr { blah blah blah } (4 Replies)

4. UNIX for Dummies Questions & Answers

Hi everybody! I need to delete several vertical lines in a huge text file. It should work like the example below. Delete the vertical lines 2 and 8. 123456789 masldfjla afsajfwel sajfljsaf safsarfrl sajfeljwq 1345679 msldfja asajfwl sjfljsf sfsarfl sjfeljq Is there a... (11 Replies)

5. Shell Programming and Scripting

it will grep for a line and then delete these line. how do i begin to write this script if theres no available one? (3 Replies)

6. Shell Programming and Scripting

Hello, I have a group of text files with many lines in each file. I need to delete all the lines in each and only leave 2 lines in each file. (3 Replies)

7. Shell Programming and Scripting

hi guys, I have very large txt files (200GB) and just want to to delete the first two lines (headers). So far I used sed -i '1,2d' infile.txtbut this command always takes extremely long as it writes all again. Is there a better way to do it (ie just to delete the lines without writing all... (2 Replies)

8. Shell Programming and Scripting

hey guys, I tried searching but most 'search and replace' questions are related to one liners. Say I have a file to be replaced that has the following: $ cat testing.txt TESTING AAA BBB CCC DDD EEE FFF GGG HHH ENDTESTING This is the input file: (3 Replies)

9. Shell Programming and Scripting

Hello, I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below). Example: one two three four five six seven eight I want it to look like: (6 Replies)

10. Shell Programming and Scripting

I'm trying to remove a specific number of lines, above and below a specific line of text, highlighted in red: <STMTTRN> <TRNTYPE>CREDIT <DTPOSTED>20151205000001 <TRNAMT>10 <FITID>667800001 <CHECKNUM>667800001 <MEMO>BALANCE </STMTTRN> <STMTTRN> <TRNTYPE>DEBIT <DTPOSTED>20151207000001... (8 Replies)