Commands by aktau (1)

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how many pages will my text files print on?
This gives a very rough estimate of how many pages your text files will print on. Assumes 60 lines per page, and does not take long lines into account.

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

Command line calculator
works with fractions like 1/3.5

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

diff will usually only take one file from STDIN. This is a method to take the result of two streams and compare with diff. The example I use to compare two iTunes libraries but it is generally applicable.
diff is designed to compare two files. You can also compare directories. In this form, bash uses 'process substitution' in place of a file as an input to diff. Each input to diff can be filtered as you choose. I use find and egrep to select the files to compare.

Check to make sure the whois nameservers match the nameserver records from the nameservers themselves
Change the $domain variable to whichever domain you wish to query. Works with the majority of whois info; for some that won't, you may have to compromise: domain=google.com; for a in $(whois $domain | grep "Domain servers in listed order:" --after 3 | grep -v "Domain servers in listed order:"); do echo ">>> Nameservers for $domain from $a

kills rapidly spawning processes that spawn faster than you can repeat the killall command
if you dont want to alias also then you can do killall rapidly_spawning_process ; !! ; !! ; !!

easily strace all your apache *child* processes
Like the original version except it does not include the parent apache process or the grep process and adds "sudo" so it can be run by user.

Convert a string to

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


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