egrep -v '(^$|^ |^ |^=|^/)' somefile > newfile^[:space:]Are you wanting to do this in windows or linux? As jim mcnamara indicated, sed is not the best choice; sed brings more problems than you could imagine.swartzism said:I would like to delete all lines starting with the following
- \t (tab)
- \n (newline)
- /
- (single space)
- =
I've tried `sed -n '/^\(\t\|\n\|/\| \|=\)$/d' OUTPUT.txt > test.txt` and combos of that to no avail. What am I doing wrong?
SED delete, or "stream editor delete", is a command-line utility used in Unix and Linux systems to delete specific patterns from a text file or stream.
SED delete works by taking in a set of instructions or commands, known as a "script", and applying those commands to each line of a given input. The script specifies which patterns to match and what actions to take on those matches, such as deleting them.
Yes, SED delete can handle multiple patterns at once. The script can include multiple commands, each targeting a different pattern, and all of them will be applied to the input in order.
By default, SED delete is case-sensitive, meaning it will only match patterns that have the exact same capitalization as specified in the script. However, there are options to make it case-insensitive if desired.
As with any command-line utility, there is always a risk of accidentally deleting important information with SED delete if the script is not carefully crafted. It is important to thoroughly test the script on a backup of the original file before applying it to important data.