Like I wrote already, you would run the latest script in addition to the earlier one. If you want to integrate them into your processing, here is a combined script which does all of the above.
The -i option causes the original file to be replaced, and the ~ argument to -i causes a backup of the original to me moved to the same file name (including path) with a tilde appended to the original name. If you don't want a backup, leave out the tilde argument.
The -0777 option causes the whole file to be read as a single "line", so that we can do substitutions straddling newline boundaries easily.
The regular expression substitutions do the following:
s/ *\r?\n *([-~\d])/ $1/g replaces a newline \n and any adjacent spaces with a single space if followed by dash, tilde, or a number [-~\d]. This takes care of wrapping. The \r? allows for an optional DOS carriage return before the newline.
s/:\s*(\d+)?\s*(~|$)/: $1 $2/mg normalizes spacing patterns for field values. A colon followed by a number \d+ followed by a tilde or end of line $ with arbitrary runs of spaces between them (including none) are replaced with exactly one space between the colon, the number, and the tilde. The question mark after (\d+) makes the number optional, which should take care of simply colon followed by tilde as well.
s/ */ /g replaces runs of two or more spaces with a single space.
The /g option causes each substitution to be performed globally (without it, only the first occurrence will be substituted). The /m option causes the regular expression $ to match a newline anywhere in a multi-line string, as well as the end of the string.
Generally, in s/any (stuff)/$1, the value of $1 on the right-hand side will be whatever matched the first set of parentheses on the left-hand side. In the case of nested parentheses, they are numbered sequentially from the left by the opening parentheses, so in s/(foo(bar)(baz))/$1 $2 $3/ you would have "foobarbaz" in $1 and "bar" in $2 and "baz" in $3 (and so the result of the whole substitution would be to replace "foobarbaz" with "foobarbaz bar baz").
Last edited by era; 06-11-2008 at 03:52 AM..
Reason: Explain $1 in s/(stuff)/$1/
Compare the column 11 of file 1 with the 1st column of file2. The 1st column of file2 contains a prefix dpt. also. We need to compare file2 with file1 and in the output we should get all the values from file2 that are present in file1. We should not remove dpt. from the output. It will always be 8 characters in 1st column of file2 (e.g DPT.1072).
I have two file as given below which shows the ACL permissions of each file. I need to compare the source file with target file and list down the difference as specified below in required output. Can someone help me on this ?
Source File
*************
# file: /local/test_1
# owner: own
#... (4 Replies)
I hope I can explain this correctly. I am using Bash-4.2 for my shell.
I have a group of file names held in an array. I want to compare the names in this array against the names of files currently present in a directory. If the file does not exist in the directory, that is not a problem.... (5 Replies)
Hi Friends,
I have file1.txt
file2.txt
I tried using the diff and comm but not getting the expected output..
I want where exactly the miss match occurs. probably the field.
Sourcevalue|Targetvalue|Linenumber|field
29123975|2923975|3|1
Please help. (6 Replies)
Hi Guys ,
we have one directory ...in that directory all files will be set on each day..
files must have header ,contents ,footer..
i wants to compare the header,contents,footer ..if its same means display an error message as 'files contents same' (7 Replies)
I've two files with data like below:
file1.txt:
AAA,Apples,123
BBB,Bananas,124
CCC,Carrot,125
file2.txt:
Store1|AAA|123|11
Store2|BBB|124|23
Store3|CCC|125|57
Store4|DDD|126|38
So,the field separator in file1.txt is a comma and in file2.txt,it is |
Now,the output should be... (2 Replies)
I really need help on creating a script that does the following:
I have one file (File 1) with lines in the following format:
Name.maf score1 score2
I have a second file (File 2) with lines in the following format:
label start end Name
What I need to do is compare File 1 and... (1 Reply)
I have a file called X, which contains the following:
10
100
200
300
I then have file Y, which containts the following:
10
200
500
800
I want to write a script that will compare the contents of Y with the contents of X and ONLY return values in Y that does not exist in X (output... (5 Replies)
Hi
I need to compare shadow file sizes with their real file counterparts. If the shadow file size differs form the realfile size then it must send a mail. My problem is that our system has over 1600 shadowfiles in different directories, with different names. the only consistancy is the .sh file... (4 Replies)