Using UNIX sed, how can I delete any line...

Using UNIX sed, how can I delete any line in a file, that repeats on the following line and is followed by a slash.

For example:

   /n_srsq                                                                                                                                         delete

   /n_srsq/create                                                                                                                              delete

   /n_srsq/create/ddl

   /n_srsq/data                                                                                                                                 delete

   /n_srsq/data/BnJavaTest.class

   /n_srsq/data/BnJavaTest.java

   /n_srsq/data/DBA_PART_LIST.donot.delete

   /n_srsq/data/DBA_PART_TST_LIST.del

   /n_srsq/data/LOGS                                                                                                                      delete

   /n_srsq/data/LOGS/all_data_files.bad

   /n_srsq/data/LOGS/all_data_files.dat

   /n_srsq/data/LOGS/all_data_files_sftp.log

   /n_srsq/data/LOGS/chk_env.logs

   /n_srsq/data/LOGS/do_not_delete                                                                                              delete

   /n_srsq/data/LOGS/do_not_delete/BN_SQLPLUS_ORA_CHECKS.DAT

Open a terminal and run:

     sed '5d' input.txt

The number after sed refers to the line number you want to delete.

To delete multiple lines:

     sed '7d;12d;16d' input.txt

Note use of a semicolon to separate line numbers.

NOTE: Replace 'input.txt' in the above sample with the name of the file you want to edit.

Honestly, if your only deleting these few lines, your standard text editor works just as well and will only take a few seconds longer,. Now if there's many more the this then using sed will be a lot quicker.

There is a very good articles at:

phoenixnap.com on the use of the sed command if you want more information.

Edited by Thomas53, 31 May 2024 - 12:43 AM.