Commands by opertinicy (3)

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How to speedup the Ethernet device
ethtool is used for querying settings of an ethernet device and changing them. In this example I setup 100 Mb/s full duplex on my Linux Box

Git diff last two commits
How about this one ?

sort monthwise
sort command can sort month-wise (first three letters of each month). See the sample output for clarification. Sorting Stable ? NO. Take note if that matters to you. Sample output suggests that sort performs unstable sorting (see the relative order of two 'feb' entries).

Generate a random password 30 characters long

history autocompletion with arrow keys
This will enable the possibility to navigate in the history of the command you type with the arrow keys, example "na" and the arrow will give all command starting by na in the history.You can add these lines to your .bashrc (without &&) to use that in your default terminal.

Get all possible problems from any log files
Using the grep command, retrieve all lines from any log files in /var/log/ that have one of the problem states

Shrink more than one blank lines to one in VIM.

Find files with the same names in several directories.
cat file1 file2 file3|sort|uniq -d finds the same lines in several files, especially in files with lists of files.

nice disk usage, sorted by size, see description for full command
full command below, would not let me put full command in text box du -sk ./* | sort -nr | awk 'BEGIN{ pref[1]="K"; pref[2]="M"; pref[3]="G";} { total = total + $1; x = $1; y = 1; while( x > 1024 ) { x = (x + 1023)/1024; y++; } printf("%g%s\t%s\n",int(x*10)/10,pref[y],$2); } END { y = 1; while( total > 1024 ) { total = (total + 1023)/1024; y++; } printf("Total: %g%s\n",int(total*10)/10,pref[y]); }'

Make backups recurse through directories


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