Let's just get down to it.
> Redirects a command's output to a file
>> Does the same as above but appends it to the end of the file instead of overwriting
The book mentions there are multiple ways to do things such as
The | I just used is a pipe. It allows you to chain two or more program's output.
tee performs like > but it sends the output to a file while also passing it to console so you can monitor what is occuring.
sort is a command that can sort a file's contents.
nl is a command that can number lines in a file which can make it easier to troubleshoot source code (if for some reason you're coding in vim...)
Apparently there is a witty command by the name of tac that can display a file backwards...
sed. For some reason the book refuses to give a good explanation so here are examples of what it can do.
sed s/cat/tac/ file will replace the first instance of cat with tac. Add "g" after /tact/ and it will replace every instance of cat with tac. Me and Henry actually used this when editing the /etc/hosts hostsname files since it contained the hostname more than once.
grep in most simple terms can find a string or phrase and return it to you.
Next is chapter 9 the Software Installation chapter and then I'm done LPIC part one...