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12-11-2008
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find, copy and replace text in bash or sh
here is my prob ..
i have a very large text files and i need to locate specific lines, copy them and then replace a single word in the replaced text example find all lines that contain '/etc', copy the line immediately below (not at the end of the file) and then replace '/etc' with '/root' in the new line old text: rsync --delete -avpz xxx.xxx.xxx.xxx:/var /usr/backup/123 > /usr/backup.log rsync --delete -avpz xxx.xxx.xxx.xxx:/usr/local/etc /usr/backup/123/loc > /usr/backup.log rsync --delete -avpz xxx.xxx.xxx.xxx:/etc /usr/backup/123 > /usr/backup.log new: rsync --delete -avpz xxx.xxx.xxx.xxx:/var /usr/backup/123 > /usr/backup.log rsync --delete -avpz xxx.xxx.xxx.xxx:/usr/local/etc /usr/backup/123/loc > /usr/backup.log rsync --delete -avpz xxx.xxx.xxx.xxx:/etc /usr/backup/123 > /usr/backup.log rsync --delete -avpz xxx.xxx.xxx.xxx:/root /usr/backup/123 > /usr/backup.log i hope my request for help is not too convoluted .. thank you so much in advance!!! j |
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12-11-2008
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Hi, You may try perl:
#! /usr/bin/perl Code:
open FH,"<a.txt";
@arr=<FH>;
map {tr/\n//d} @arr;
for($i=0;$i<=$#arr;$i++){
print $arr[$i],"\n";
if ($arr[$i]=~m/etc/){
print $arr[$i+1],"\n" if ($i+1 <= $#arr);
$arr[$i+1]=~s/etc/root/ if ($i != $#arr);
}
}
close FH;
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