Shell Example
Mark Voortman, Ph.D.
pkg install xorgpkg install xfcestartxfce4
w: Display logged in accountswho: Who is logged in to this sessionwhoami: User name onlylogname: Logged in user namehostname: Name of computerpwd: Print working directory (shows where you are)df: Display disk space statuscat: Display content of a fileecho: Echo back command line parametercd: Change directory
ls: List directory contentscp: Copy filerm: Remove filemv: Move file (and rename)mkdir: Create a directoryrmdir: Remove a directoryls –R | lessls –R | grep var | less> Send to>> Send to append< Input fromls > directories.txtcat directories.txtls > /dev/nullless < directories.txtkill XXX - kill process XXX by sending a
signal (SIGTERM)kill -9 XXX - force kill process XXX by
sending a signal (SIGKILL)man command will display manual pagesapropos command conducts searches
man –kwhatis command synonym for aproposvi is default editoree is generally considered much easier to use for most
people
df -h Present output in human readable formatdu -sh Present output for every entry, human
readabledu -a /var | sort -nr | head -n 10 Display out for each
entry in /var, pipe it to sort, sort numeric in reverse order, pipe to
head, display first 10.du -hc * | grep “[0-9]M” | tail | sort -nr Display
human readable, grand total, pipe to grep, search for all lines with a
number followed by “M”, pipe to tail (which will display the bottom
lines, pipe to sort, sort in numeric reverse order.find / -type f -size +1024k -exec ls -al {} \; | head -25
-type f – this means include only regular files-size +1024k – this means include only files larger
than 1,024K-exec ls -al {} \; – execute the ls command with the
-al options.
{} is a placeholder for the files found by the file
command.
