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I have file, with lines, contains ip with netmask a.b.c.d/24 w.x.y.z/32 etc How to delete delete specific row? i'm using
sed -ie "s#a.b.c.d/24##g" %filname%
but after the removal is an empty string in file.
It should run inside a script, with ip as parameter and also work in freebsd under sh.
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To delete a line, we'll use the sed “d” command. Note that you have to declare which line to delete. Otherwise, sed will delete all the lines.
To Remove the lines from the source file itself, use the -i option with sed command. If you dont wish to delete the lines from the original source file you can redirect the output of the sed command to another file.
There is no available to delete all contents of the file. How to delete all contents of the file using sed command.
To delete line 1, use awk 'NR!= 1'. The default action is to print the line. All of your '{next} {print}' terms can be removed.
sed -i '/<pattern-to-match-with-proper-escape>/d' data.txt
-i option will change the original file.
awk '!/<pattern-to-match-with-proper-escape>/' data.txt
Using sed:
sed -i '\|a.b.c.d/24|d' file
Command line arg: For the input being command line argument, say 1st argument($1):
sed -i "\|$1|d" file
Replace $1 with appropriate argument number as is your case.
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