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List files with full path

Validate all XML files in the current directory and below
If everything validates, there's no output. Can be handy to run on a cron job set up to email output.

give a binary the ability to open ports below 1024 as non root user
Binding a server to privileged port on Linux w/o running as root This is applicable to any service using privileged ports (< 1024), for instance to run a HTTP server on port 80 or a LDAP directory server on port 389 for example.

remove newlines from specific lines in a file using sed

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

View all new log messages in real time with color
This will show all changes in all log files under /var/log/ that are regular files and don't end with `gz` nor with a number

Recursive grep of all c++ source under the current directory

Test your bash skills.

network throughput test
On the machine acting like a server, run: $ iperf -s On the machine acting like a client, run: $ iperf -c ip.add.re.ss where ip.add.re.ss is the ip or hostname of the server.

Wait for file to stop changing
This loop will finish if a file hasn't changed in the last 10 seconds. . It checks the file's modification timestamp against the clock. If 10 seconds have elapsed without any change to the file, then the loop ends. . This script will give a false positive if there's a 10 second delay between updates, e.g. due to network congestion . How does it work? 'date +%s' gives the current time in seconds 'stat -c %Y' gives the file's last modification time in seconds '$(( ))' is bash's way of doing maths '[ X -lt 10 ]' tests the result is Less Than 10 otherwise sleep for 1 second and repeat . Note: Clever as this script is, inotify is smarter.

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