Weather based on your location
Quick and dirty one-liner to get the average ping(1) time from a server. Show Sample Output
when we work with terminal often we open man pages for help if we did some mistakes and when we want to open the man page for command we are working with this one helps as many people may be knowing that '!!' performs the last command action we use it in sudo !! to perform the last action with root previleages man !! will also be helpful and handy thanx
Get the first IPv4 address of an interface Show Sample Output
If you want to copy all files listed (with full path) in a text-file (i.e. cmus playlist.pl) to a certain directory use this nice oneliner... Credits goes to RiffRaff: http://www.programmingforums.org/post242527-2.html
alternative to tr char '\012' works with sed's that don't accept "\n" allows for multi-char sentinals, while tr(1) only operates on single chars
i686 = 32 bits x86_64 = 64 bits the command "getconf LONG_BIT" will work just as well. Show Sample Output
cat - concatenate MP3 files and save it... Show Sample Output
Useful command to avoid unreadble script in a single file...
Build an awk array with all commands and then select a random one at the end. This avoids spawning extra processes for counting with wc or generating random numbers. Explicitly call /bin/ls to avoid interactions with aliases.
Useful in while and if statements
if not grep string filename; then echo string not found; exit 1; fi
This command is useful for separating a text file where all the words are in one line. Any group of spaces will be replaced with a single newline. Instead of one long line of tokens. You'll have a long list of tokens. One token per line.
macchanger will allow you to change either 1) mfg code, 2) host id, or 3) all of the above. Use this at wifi hotspots to help reduce profiling. Show Sample Output
I don't know if it's better but works fine :)
only take the first field on each row to compute the fibo on this number Show Sample Output
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