Commands using dd (167)

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Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

most used unix commands

calulate established tcp connection of local machine
If you want prepend/append text just wrap in echo: $echo Connected: `netstat -an|grep -ci "tcp.*established"`

reduce mp3 bitrate (and size, of course)
Useful if you have to put some mp3 files into mobile devices (ie mobile phones with no much memory)

Top 10 Memory Processes
It displays the top 10 processes sorted by memory usage

Terminal - Show directories in the PATH, one per line with sed and bash3.X `here string'
another method : awk '{gsub(/:/, "\n");print}'

Git Global search and replace
Find all the occurrences in the git repo of 'foo' and replace with 'bar'

cd to (or operate on) a file across parallel directories
This is useful for quickly jumping around branches in a file system, or operating on a parellel file. This is tested in bash. cd to (substitute in PWD, a for b) where PWD is the bash environmental variable for the "working directory"

send echo to socket network
this command will send a message to the socket 25 on host 192.168.1.2 in tcp. works on udp and icmp understand only IP address, not hostname. on the other side (192.168.1.2), you can listen to this socket and test if you receive the message. easy to diagnose a firewall problem or not.

Access to specific man page section
You can view the man pages from section five by passing the section number as an argument to the man command


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