2
votes
Accepted
Remove duplicate lines based on specific string
sed? no. awk? yes.
The first one can be answered with
awk '!seen[$2]++' file
20151222051106 http://website.org/2015-12-11-art1
20151222050165 http://website.org/2015-12-12-art2
20151222051901 http://...
- 26.8k
1
vote
Accepted
Can multiple command arguments into variable and be expanded back in POSIX script?
The backslashes are there to escape the parentheses from the shell (to the shell, parentheses launch the enclosed commands in a subshell)
If you're storing that phrase in a variable, omit the ...
- 26.8k
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