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Views: 1423 | Replies: 3
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Join Date: Jul 2006
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Newbie Poster
About "diff -y" Hello all:
I want to compare two folders by script like this "diff -yr folder1 folder2",but I find there are two problems in the result which is not what I want,please help me.
Problem One:
If there are two line is different,and every line is too long, the result will be shown like this "lineA ........... | lineB .........." ,in this case,every line will not be integrated.
Problem Two:
Because of using the parameter "-r",when the command "diff" get more than one different lines,some script in the right part of the line will be shown in the result,for example "lineA | lineBdiff -yr folder1/file33 folder2/file44".
How can I improve it?Please help me,thanks!
I want to compare two folders by script like this "diff -yr folder1 folder2",but I find there are two problems in the result which is not what I want,please help me.
Problem One:
If there are two line is different,and every line is too long, the result will be shown like this "lineA ........... | lineB .........." ,in this case,every line will not be integrated.
Problem Two:
Because of using the parameter "-r",when the command "diff" get more than one different lines,some script in the right part of the line will be shown in the result,for example "lineA | lineBdiff -yr folder1/file33 folder2/file44".
How can I improve it?Please help me,thanks!
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Join Date: May 2004
Posts: 177
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Junior Poster
First off:
-y produces side by side output. diff tries to fit two lines into 80 columns, that's why the lines are truncated.
-r displays a filename. otherwise you would never know what the diff output was based on.
what are you trying to do? && what output would you like to have?
-y produces side by side output. diff tries to fit two lines into 80 columns, that's why the lines are truncated.
-r displays a filename. otherwise you would never know what the diff output was based on.
what are you trying to do? && what output would you like to have?
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Join Date: Jul 2006
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Newbie Poster
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Originally Posted by jim mcnamara
First off:
-y produces side by side output. diff tries to fit two lines into 80 columns, that's why the lines are truncated.
-r displays a filename. otherwise you would never know what the diff output was based on.
what are you trying to do? && what output would you like to have?
Hi jim mcnamara,thank you for your reply!
In fact,I need a shell script that output a result of the difference with a friendly format.So I hope the result will be shown normally when the two lines are longer than 80 columns.In addition,I want to convert this output "lineA | lineBdiff -yr folder1/file33 folder2/file44" into this output "lineA | lineB" + \n + "diff -yr folder1/file33 folder2/file44".And,in this case, how to judge that "diff -yf folder1/file33 folder2/file44" is not belonged to "lineB" ?
Would you help me?
Last edited by nihao : Jul 12th, 2006 at 10:36 am.
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Join Date: May 2004
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Junior Poster
One way is to write a short script that compares files with like names:
All the " " are there in case filenames have spaces.
#/bin/ksh export PATH1=/path/to/folder1 export PATH2=/path/to/folder2 find $PATH1 -name '*' | \ while read file do base="`basename "$file"`" if [[ `cmp "$file" "$PATH2/""$base" 2>&1 > /dev/null; echo $?` -eq 1 ]] ; then echo "$file" " " "$PATH2/""$base" diff "$file" "$PATH2/""$base" fi done > diff.log
All the " " are there in case filenames have spaces.
Last edited by jim mcnamara : Jul 12th, 2006 at 2:33 pm.
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