\/sbin\/ifconfig = network info
\n
\/sbin\/lspci | grep -i vga = graphics card info<\/p>\n
strings \/bin\/ls | grep -i libc = finds all occurrences of libc in ls
\n
strings \/bin\/ls = lists all ASCII text in ls
\n
su -c ‘gedit \/etc\/yum.conf’ = opens yum.conf file in gedit<\/p>\n
tail -3 ok = last 3 lines from a file named ok
\n
tail -6 .bash_history = last 6 commands
\n
tail -5 filename.txt = prints last 5 lines of the file to the screen
\n
tail -n 5 filename.txt = prints last 5 lines of the file
\n
tail -f \/var\/log\/messages = updates size of text file as it gets bigger
\n
tail -f \/var\/log\/messages = displays system messages live
\n
tail -f \/var\/log\/maillog = displays mail server messages live
\n
tail -f \/var\/log\/httpd\/access_log = displays web server messages live<\/p>\n
tar cvf abc.tar abc.txt = tars a file with verbose
\n
tar xvf abc.tar = untars a file with verbose
\n
tar c abc.txt | gzip -c > abc.tar.gz = archives file and zips a file (two steps)
\n
tar czf abc.tar.gz abc.txt = archieves and zips a file (one step, z = unzip, c = create)
\n
tar czvf abc.tar.gz abc.txt = archieves and zips a file with verbose
\n
tar cjvf abc.tar.bz2 abc.txt = archieves and zips a file with bzip2
\n
tar xzvf abc.tar.gz = unzips and untars file (one step, x = untar)
\n
tar xjvf abc.tar.bz2 = unzips and untars file (one step, j = bzip2)<\/p>\n
time = prints current time
\n
time yum\/command name = command’s excution time
\n
top = lists process with cpu usage
\n
top -d 5 = changes update delay to 5 seconds (from default 3)
\n
top -u james = process info for user james
\n
top -p 190,2690 = process for for id 190 and 2690
\n
top -n 10 = refreshs the screen 10 times before quitting
\n
top -b = runs in non-interative non-screen-oriented mode
\n
touch name.txt = creates a file named name.txt
\n
touch \/var\/log\/btmp = enables recording of bad attempts
\n
tree -dx = directory structure of the os
\n
type php = path of executables\/shell commands<\/p>\n","protected":false},"excerpt":{"rendered":"
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