10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a file:
I want to retain... (15 Replies)
Discussion started by: Alyaa
2. Shell Programming and Scripting
I have multiple files of same format and I want to delete the lines starting with # and The from all of them
I am using
egrep -v '^(#|$)'
for # but unable to do for both # and The
Thanks (12 Replies)
Discussion started by: bioinfo
3. UNIX for Advanced & Expert Users
I am trying to remove all lines of a data file if the 32nd character in the line is 0.
Is there a short, one-line way to do this with grep, awk, or sed?
Thanks! (4 Replies)
Discussion started by: palex
4. Shell Programming and Scripting
This is what I would like to accomplish, I have an input file (file A) that consist of thousands of sequence elements with the same number of characters (length), each headed by a free text header starting with the chevron ‘>' character followed by the ID (all different IDs with different lenghts)... (9 Replies)
Discussion started by: Xterra
5. UNIX for Dummies Questions & Answers
In my command prompt I did:
sed 's/\://' mytextfile > newtextfile
But it only deleted the first instance of : in each line when some lines have multiple : appearing in each one. How can I delete all the : from the entire file? (1 Reply)
Discussion started by: guitarscn
6. Shell Programming and Scripting
I have a big log file i want to delete all characters (between 350th to 450th characters) starting at 350th character position to 450th character position.
please advice or sample code. (6 Replies)
Discussion started by: rajeshorpu
7. Shell Programming and Scripting
Hi I have a file that looks like this:
Basically what I want to do is delete the _# ending. So the output will look like this:
thanks (5 Replies)
Discussion started by: kylle345
8. UNIX for Advanced & Expert Users
Hi, I've got a file where in the middle of the record is a $ end of line character, visible only when I open the file in vi and do :set list. How to I get rid of the character in the middle and keep it at the end. The middle $ character always appears after SW, so that can be used to tag it.... (3 Replies)
Discussion started by: bwrynz1
9. Shell Programming and Scripting
hi, i have a file that has about 4500 rows. this was an old microsoft access databse and what i am trying to do is take out the old extra \n newline characters but not take out the "true" newline character. I will explain.
i was trying to write a regular expression, but that was not... (1 Reply)
Discussion started by: caddyjoe77
10. UNIX for Dummies Questions & Answers
I'm having problems deleting a file with a special character and I'm hoping that somebody here can help. The file "-osample1.c" will not remove from my directory. Here is an example of what happens. Any ideas would be appreciated.
> ls *sample1*
ls: illegal option -- .
usage: ls... (2 Replies)
Discussion started by: hart1165