# delete the last line of a file sed '$d' # delete the last 2 lines of a file sed 'N;$!P;$!D;$d' # delete the last 10 lines of a file sed -e :a -e '$d;N;2,10ba' -e 'P;D' # method 1 sed -n -e :a -e '1,10!{P;N;D;};N;ba' # method 2 # delete ...
# delete the last 2 lines of a file sed 'N;$!P;$!D;$d' The above will delete the last 2 line of a file. I tried analyzing what happens. And I got lost This is what I understood so far from the above. N;Read the complete file into the pattern-space. ...
sed or awk: delete n lines following a formfeed Hi Members, This is my first post in this forum. I want to do is match form feed lines one by one in a file and delete the next n lines (ex-3 lines) with the form feed character Eg - Files looks like Data 1 Data 2 Data 3 FF...
# delete the last line of a file sed '$d' # delete the last 2 lines of a file sed 'N;$!P;$!D;$d' # delete the last 10 lines of a file sed -e :a -e '$d;N;2,10ba' -e 'P;D' # method 1 sed -n -e :a -e '1,10!{P;N;D;};N;ba' # method 2 # delete ...
Using the strong (single quote) character, that would be: sed 's/day/night/' <old >new I must emphasize that the sed editor changes exactly what you tell it to. So if you executed echo Sunday | sed 's/day/night/' This would output the word "Sunnight" because sed found the ...
Similarly, you can delete all lines that end with a certain character/word: sed '/L$/d' filename Delete all lines containing a word or pattern Actually, the above few examples could be grouped in this one because all of them are deleting lines that follow a pattern. ...
the last line. /regexp/ Match lines matching the regular expression regexp. \cregexpc Match lines matching the regular expression regexp. The c may be any character. GNU sed also supports some special 2-address forms: 0,addr2 Start out in "matched first address" state, until addr2 is ...
delete all lines except duplicate lines (emulates "uniq -d"). sed '$!N; s/^\(.*\)\n\1$/\1/; t; D' delete the first 10 lines of a file sed '1,10d' delete the last line of a file sed '$d' delete the last 2 lines of a file ...
Match the last line: $ Match lines matching the regular expressionregexp: /regexp/ Match lines matching the regular expression regexp. Thecmay be any character: \cregexpc GNU sed also supports some special 2-address forms Start out in "matched first address" state, untiladdr2is found. Thi...
Using the strong (single quote) character, that would be: sed 's/day/night/' <old >new I must emphasize that the sed editor changes exactly what you tell it to. So if you executed echo Sunday | sed 's/day/night/' This would output the word "Sunnight" because sed found the ...