Find lines with "A" then change "E" to "X" same line
I have a bunch of random character lines like ABCEDFG. I want to find all lines with "A" and then change any "E" to "X" in the same line. ALL lines with "A" will have an "X" somewhere in it. I have tried sed awk and vi editor. I get close, not quite there. I know someone has already solved this one.
ALL of the samples you gave me work fine. Many thanks.
I am working with a 500,000 record file, about 18meg, and the commands which work just fine on a small file are hanging on the large one. One has been "running" for two days. I have tried this on both SUN Solaris, and AIX flavors of Unix. Can anyone suggest something? Below are the commands I use. Again, they work just fine on the small test files I have used. It could be the size, or there could be something unique about the data in the larger file. Please help.
I have tried:
and
Last edited by Don Cragun; 08-25-2013 at 09:03 PM..
Reason: Added CODE tags
Anchoring - if possible - sometimes really speeds things up, as the regex doesn't need to be searched in the whole line but in certain places. So, if "DESCRIPTION" always shows up in a constant position, count that relative to the BOL and use "^" in your regex.
EDIT: And, I guess, it scans lines twice: one for the address (/DESCRITPTION/), and then again for the occurrences of /"/. Maybe you can improve that:
?
Last edited by RudiC; 08-25-2013 at 04:38 PM..
Reason: typo in command proposal
Sorry about the code tags. Now I understand and will use them in the future.
The first "find" is necessary. I only want to make the change in lines which contain the first "find" field. Once I find a line with "A" I want to change "E" to "X" in the same line. No way to change that (that I know of).
And there is some variation in where the "A" field is found.
I have it working fine in my simple short test file, but the long file it seems to hang on something. Very frustrating, so close and yet so far.
Hi 2 all,
i have had AIX 7.2
:/# /usr/IBMAHS/bin/apachectl -v
Server version: Apache/2.4.12 (Unix)
Server built: May 25 2015 04:58:27
:/#:/# /usr/IBMAHS/bin/apachectl -M
Loaded Modules:
core_module (static)
so_module (static)
http_module (static)
mpm_worker_module (static)
... (3 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
These three finds worked as expected:
$ find . -iname "*.PDF"
$ find . -iname "*.PDF" \( ! -name "*_nobackup.*" \)
$ find . -path "*_nobackup*" -prune -iname "*.PDF"
They all returned the match:
./folder/file.pdf
:b:
This find returned no matches:
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Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
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Hi Friends,
Can any of you explain me about the below line of code?
mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`
Im not able to understand, what exactly it is doing :confused:
Any help would be useful for me.
Lokesha (4 Replies)