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same as the previous commands... with just one awk command
This function tests the hostname:port from any url to see if it is accepting connections.
It uses netcat with a 5s timeout, if a port number is not part of the url passed to it, then default port 80 is tested.
Applies 'docker rm' to all container IDs that appear in 'docker ps -a' but not in 'docker ps' - i.e. the ones that are not running.
accomplishes the same thing without unzipping the whole file, and while i have never seen a log.tar.gz file that was a binary, i will concede that it might happen, so add the -a in there:
zgrep -ia "string" log.tar.gz
it's still shorter/easier to type...
Use shell expansion to create a back-up copy (file.txt.bak) of a file (file.txt) and keep the original last modified date and time.
If the version already downloaded. it will not download again
Thx Mass1 for the sharing
The shortest and most complete comment/blank line remover...
Any line where the first non-whitespace character is # (ie, indented # comments), and all null and blank lines are removed. Use the alias as a filter:
grep server /etc/hosts | noc
Change to nawk depending awk versions.
tar with -p option preserves file permissions
Print the IP address and the Mac address in the same line