This is a list of topics intended as a checklist to help you recall what topics and commands have been covered
Command | Description | Flag options covered |
You should be able to |
---|---|---|---|
grep | Search for patterns within files | -i -n -l -P |
ignore case
line numbers display filenames only tell it to use a Perl regular expression pattern know the basic regular expression patterns discussed in class (Lecture set 5) |
ps | report on current processes | -e -f -a aux -l |
view all processes on the system (-e)
view the "full format" (-f) all processes except for session leaders (-a) view the "long format" (-l) |
jobs | Shows background processes | view the current background processes you are running | |
fg | put a job into foreground | put one of your background processes into the foreground | |
bg | run a job in the background | put one of your current jobs to run in the background | |
Ctrl-Z | suspend the current foreground process | suspend a process without killing it | |
Ctrl-C | kill foreground job | kill, or cancel, the current foreground process | |
kill | kill a running process, through its process ID (PID) number | -KILL | send a KILL signal to override and halt processes that can't be killed with normal kill command |
sleep | a delay for a specified time | cause current process to sleep, or delay, for specified number of seconds | |
nice | Run a process with modified priority level | Run a process with a specified priority level, between -20 and 20 | |
sh | Run the Bourne shell | start the Bourne shell (no parameters)
or run a script with sh (one parameter) |
|
bash | Run the Bourne Again shell | start the Bourne Again shell (no parameters)
or run a script with bash (one parameter) |
|
csh | Run the C shell | start the C shell (no parameters)
or run a script with csh (one parameter) |
|
tcsh | Run the Tenex shell | start the Tenex shell (no parameters)
or run a script with tcsh (one parameter) |
|
ksh | Run the Korn shell | start the Korn shell (no parameters)
or run a script with ksh (one parameter) |