How do I execute a command on a given string in each line of a file?

Question

Let's assume that I already have a file created. This file creation comes from the execution of a command. The contents of the file will be up to 4 different lines looking something like this:

LUN Path:  servernam:/vol/server_xx_t1_01_223_04/mssql01/server_StorageSystemLevel100.lun
LUN Path:  servernam:/vol/server_xx_t1_01_225_04/mssql01/server_StorageSystemLevel100.lun
LUN Path:  servernam:/vol/server_xx_t1_01_226_04/mssql01/server_StorageSystemLevel100.lun
LUN Path:  servernam:/vol/server_xx_t1_01_228_04/mssql01/server_StorageSystemLevel100.lun

How can I pipe/awk/whatever this file so I can get the second string, i.e. "servernam:/vol/serverxxxx", and then run a command like:

rm  servernam:/vol/server_xx_t1_01_228_04/mssql01/server_StorageSystemLevel100.lun

So I want to pull the right string out of the file and include it as an argument to a command. Note that I would need to do the same execution command against all 4 different strings. A script example, or even better all from the command line, would be much appreciated.

Answer 1

echo rm $(sed -n -e 's/[^A-Za-z0-9]/\\&/g' -e 's/LUN Path:  *//p')

The first s command adds a backslash before every character that isn't a newline, letter or digit. The second command strips the LUN Path: prefix from the lines that have it, and print out only the lines that have the prefix. The resulting string undergoes filename expansion and word splitting in the shell; since all problematic characters except newlines have been escaped, the proper file names will be passed to the command.

Answer 2

ls $(awk '{print $3}' /path/to/your/file)

check if this works as expected and then replace ls with rm