Sponsored Content
Top Forums Shell Programming and Scripting perl script file manipulation Post 302228854 by redoubtable on Monday 25th of August 2008 04:22:06 PM
Old 08-25-2008
The code I gave you is not changing anything but is doing what you asked: replace description on file2 from entries found in file1. If you wish the code to replace file2, just:
Code:
perl -ane 'if (/^((.*?)\s(?:.*?\s){3})(.*?)$/) { print "$1".(defined $h{$2}?$h{$2}:$3)."\n"; } else { /^(.*?)\s(.*?)$/; $h{$1} = $2; }' file1 file2 > file2.new && mv file2.new file2

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Data manipulation in perl

Hello guys.. I have the following question. lets have that i have the following variable: $field=werfiurd383nd93bc93 c93 d93 d9e3 ddd or array=werfiurd383nd93bc93 c93 d93 d9e3 ddd what i would like to do is to store the first 4 characters of gthe aboce variable in variable... (1 Reply)
Discussion started by: chriss_58
1 Replies

2. Shell Programming and Scripting

Perl, string manipulation

Hi all, Supposing the following string: XXXXXXXXXXNEAXXXXXX How can I check if this string has the substring NEA? Best regards Chris (3 Replies)
Discussion started by: chriss_58
3 Replies

3. Shell Programming and Scripting

Perl to perfrom string manipulation

Hi, Please advise me how to perform checking in perl on the following input below. The output criteria will be 1. field 1 will begin as 913354744 for each as example 2. field 4 must be unique. 3. field 7 is showing dd/mm/yyyy, but it require checking if unixtime should covert to... (5 Replies)
Discussion started by: rauphelhunter
5 Replies

4. Shell Programming and Scripting

Array manipulation in perl

hi all, i am trying to append the output of a find command (for different paths)in an array as below... my $res_array; $i=0; $dir="/orn/ops/regs"; foreach $block("am","xb"){ $bdir="$dir/$block"; $res_array=`find $bdir ! -user mainuser -printf \"\%u \%h\\n\"`; $i++; } i... (6 Replies)
Discussion started by: saapa
6 Replies

5. Shell Programming and Scripting

Perl Text manipulation

Hello All, I have been working on a great script to remotely gather server info and store it in a .txt that can be imported to .xls I have been reading the hostnames that are in the /.shh/known_hosts file so I don't have to mess with passing a password - via ssh (not easy to do , by the... (1 Reply)
Discussion started by: dfezz1
1 Replies

6. Shell Programming and Scripting

Perl Text Manipulation

I'm in need of help for a project that I'm working on. I believe Perl would be the best way of handling the string manipulation, however, I've barely used perl, and I'm used to BASH scripting. Another note is, this project is in a Windows environment, so I can use Perl, but I do not have shell... (1 Reply)
Discussion started by: drewrockshard
1 Replies

7. Shell Programming and Scripting

Shell script text file manipulation.

Hello, I have mysql binary file which logs all the database queries and i to insert all queries log in to database. First i coverted binary file to text file. and start playing with it. Text file contains following queries, some samples are, SET INSERT_ID=1; INSERT INTO test... (0 Replies)
Discussion started by: mirfan
0 Replies

8. Shell Programming and Scripting

Difficult problem: Complex text file manipulation in bash script.

I don't know if this is a big issue or not, but I'm having difficulties. I apoligize for the upcoming essay :o. I'm writing a script, similar to a paint program that edits images, but in the form of ANSI block characters. The program so far is working. I managed to save the image into a file,... (14 Replies)
Discussion started by: tinman47
14 Replies

9. UNIX for Dummies Questions & Answers

Help with file manipulation script

I am a UNIX newbee . I have been doing some reading lately but really need help with an an urgent requirement.After almost two days of googling I end up with 0 luck. Hopefully a guru on here will be able to help me out. Here is my requirement: I have 20 files in a directory with detail records... (6 Replies)
Discussion started by: jeyd
6 Replies

10. Shell Programming and Scripting

File Manipulation - UNIX script

Hi, I have a file about 100 lines. Each line is about 2000 characters (each line is fixed length). In middle of each line is following constant value 0000040029892586 Now, I want to go through each line and increment by 1. So, line 1 will have 586 line 2 will have 587, line 3 will have... (4 Replies)
Discussion started by: jakSun8
4 Replies
mv(1)							      General Commands Manual							     mv(1)

Name
       mv - move or rename files

Syntax
       mv [-i] [-f] [-] file1 file2

       mv [-i] [-f] [-] file... directory

Description
       The command moves (changes the name of) file1 to file2.

       If  file2  already  exists,  it is removed before file1 is moved.  If file2 has a mode which forbids writing, prints the mode and reads the
       standard input to obtain a line.  If the line begins with y, the move takes place.  If it does not, exits.  For further information, see

       In the second form, one or more files (plain files or directories) are moved to the directory with their original file-names.

       The command refuses to move a file onto itself.

Options
       -		   Interprets all following arguments as file names to allow file names starting with a minus.

       -f		   Force. This option overrides any mode restrictions or the -i switch.

       -i		   Interactive mode.  If a move is to supersede an existing file, the system prompts youw with the name of the	file  fol-
			   lowed  by  a question mark.	If you type a string that begins with y, the move occurs.  If you type any other response,
			   the move does not occur.

Restrictions
       If file1 and file2 lie on different file systems, must copy the file and delete the original.  In this case the owner name becomes that	of
       the copying process and any linking relationship with other files is lost.

See Also
       cp(1), ln(1)

																	     mv(1)
All times are GMT -4. The time now is 12:51 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy