Get random numbers or random words in Linux command line with shuf.
Get a random port number with shuf command:
shuf -n 1 -i 1024-65535Write it directly into a new variable:
RANDOM_PORT=`shuf -i 1024-65535 -n 1`Get random word from a word list:
shuf -n 1 /usr/share/dict/words
This How-To describes how you can drastically improve the detection rates of clamAV. Mainly written for integration into your existing mail server setup, but clamAV works system-wide.
Continue readingDownload the content of an URL to a filecurl http://example.com/text.txt -o filename.txt
Download the content of a URL and safe it by the given namecurl -O http://example.com/text.txt
This requires inotify to be installed
while true; do inotifywait -r -e MODYFY dir/home/user/test runme.sh; done;
Create a tar archive
tar -cf archive.tar file1 file2 ... fileN
Create tar archive from a directory
tar -cf archive.tar /path/to/directory/
Create a tar gzipp’d archive
tar -zcf archive.tar.gz file1 file2 ... fileN
Create a tar gzipp’d archive from a directory
tar -zcf archive.tar /path/to/directory/
Create multi-part tar archives from a directory
tar cf - /path/to/directory|split -b<max_size_of_part>M - archive.tar
Extract all files from a tar archive
tar -xf archive.tar
Extract all files from a tar gzipped archive
tar -zxf archive.tar.gz
Extract all files from a tar gzipped archive into a directory
tar -xzf archiv.tar.gz -C /path/to/directory/
Extract a single file from a tar archive
tar -xf archive.tar the_one_file
Sometimes we have to adjust the locales of Debian, e.g. when apt issues error messages. This can be done quickly.
localectl set-locale LANG=en_US.UTF-8
That’s it.