Commands by jtopian (2)

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View user activity per directory.
View all files opened by a user in specified directory. The +D option makes lsof search all sub-directories to complete depth, while ignoring symbolic links.

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.

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

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

Wrap text files on the command-line for easy reading
fold wraps text at 80 characters wide, and with the -s flag, only causes wrapping to occur between words rather than through them.

Set OS X X11 to use installed Mathematica fonts

List docker volumes by container

Split File in parts
Split File in 19 MB big parts, putting parts together again via cat Nameforpartaa Nameforpartab Nameforpartac >> File

Extracts PDF pages as images

Number of CPU's in a system
This appears to do the same. Utility is verified to be present on Ubuntu and OpenSuse out-of-the-box.


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