Contents
How to insert a line of text in multiple files?
The code basically searches for the filename (it could be *.*, if you want to insert the texts in all files) within the given directory and its sub-directories. Within the files found, it searches for the pattern ‘VirtualHost’. After it found the pattern, it replaces it with firstline secondline otherlines \\VirtualHost.
How to find lines containing a string and then printing those specific?
As for your question about sed, the example you gave only works if you already know the line numbers. You can also do something like: This will find things which are files (as opposed to directories or links) under the /media/slowly/DATA/lots_of_files directory.
How are lines containing a string and then SED?
Related to -C are -A (for A fter), and -B (for B efore), which only give the specified number of lines after or before a match, respectively. As for your question about sed, the example you gave only works if you already know the line numbers.
How to search a string in multiple files in Linux?
I want to search a string in the directory (sub directories too) /www/mydirectory, the string is parcel. I have tried with the command grep -r “parcel”. i got this from stackoverflow.
How to replace a string in multiple files?
To replace a string in multiple files you can use: grep -rl string1 somedir/ | xargs sed -i ‘s/string1/string2/g’
How to search for files in a text file?
To list the exact files that you want to search in a text file, use the search criteria in the file stringlist.txt, to search the files listed in filelist.txt, and then to store the results in the file results.out, type: findstr /g:stringlist.txt /f:filelist.txt > results.out
How to add a line to a file in Linux?
If you need to add a line to a file in Linux, and you need to add that line in a specific position of the file there is an easy solution, even if you need to do it to hundreds of thousands of files. Consider this file: line 1 line 2 line 4. As you can see we missed line 3, so to add it just execute this command:
How to add a line to a specific position?
3: is the line where you want the new line inserted i: is the parameter that says sed to insert the line. line 3: is the text to be added in that position. filename: is the file where sed is going to act. That will just put the result in the screen but the file will remain the same, you can redirect the output to a new file:
Where do you insert a line in SED?
The important thing is the file is edited in place, and the line is inserted at the beginning of the file. To answer your original question, here’s how you do it with sed: The “1i” command tells sed to go to line 1 and insert the text there.