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54 Cards in this Set
- Front
- Back
man
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Command to show the manual of a command. This will help show what the command does and how to use it.
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Info
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Similar to man pages, it shows information regarding the command. Info uses "less" reader to display information.
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tee
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Used to help "pipe" linux data streams. It will take the data from a stream and pipe it to a text file and the output on your terminal (screen).
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cat
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Shows the contents of a text file.
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xargs
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Great program that allows you to use the output from one program as an argument in another program. Common use is with a command like...
find *.prof | xargs rm -f |
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join
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Will join text files and group the lines together based on contents of the file.
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paste
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This is will join text files together on a line by line basis. Similar to the "join" command but it does not group the information. It's is just line 1 is matched with line 1 in a text file.
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expand
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This will convert Tabs to Spaces in a text file.
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od
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If a file is not an ASCII file, such as a graphic or music file, you can use the "od" command to display the giberish in numebrs.
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sort
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This will sort the standard output of a file.
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split
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This will split a file in different peices. Options include by bytes and number of lines.
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tr
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Kind of the "find and replace" command in the command-line world. This will allow you to have the program look for characters and replace those characters with others.
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unexpand
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Converts spaces to Tabs.
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uniq
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This command will delete duplicate lines in a text file.
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fmt
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Used to take a file that has long lines and reformats it to a more readable format with shorter lines.
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nl
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Adds numbers to lines in a text file.
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pr
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Prepares a file for printing.
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lpr
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Used to Print Files
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head
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By Default show the first 10 lines of a text file.
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tail
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By default shows the last 10 lines of a text file.
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less
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Newer File reader
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more
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Older File reader
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cut
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Extracts text from a file.
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wc
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Obtains a word count.
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grep
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Used to search for files that contain a certain string.
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sed
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Powerful tool to directly modify the contents of a file and sending it to standard output. Can be used in many many ways to modify a file.
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rpm -i
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Command to install an RPM file.
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rpm -e
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Command to uninstall an rpm file.
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dpkg -i
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Command to install a DEB package.
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dpkg-r
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Command to uninstall a debian package.
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dpkg -p
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Command to display package information for a DEB package.
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yum
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Used on RPM distrobutions to donwload no software packages.
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apt-get
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Used on Debian disrobutions to download new packages.
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alien
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Used to convert between cpio, rpm, and deb packages.
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ln
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Create a symblic link
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ldd
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Used to check which libraries a program uses.
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ldconfig
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Rebuild the library cache. This must be done when removing or adding libraries to a system.
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ps
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Used to show running processes.
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top
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Auto updating list of current processes running.
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nice
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Used to launch a program with a specified CPU Priority
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renice
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Used to reprioitize (for CPU) a currently running process.
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kill
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Used to kill a process by using the Process ID (PID)
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killall
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Used to kill a process by designating a process name.
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modeprobe
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Adds kernel modules and the required dependencies for them.
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insmod
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Loads kernel modules individually.
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rmmod
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Remove Kernel Module
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df -h
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Show which mount points are mounted to different partitions in human readable format.
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mkswap
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Make a Swap Partition
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swapon
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Turn on swap
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dump2efs -h
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Show detailed filesystem data in human readable format.
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tune2fs
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Used to change the options of a filesystem such as when it is checked or adding a journal.
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debugfs
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Combines the capabilites of dumpe2fs and tune2fs. Also enables you to recover deleted files.
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fsck
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Used to check filesystems for problems.
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du -h
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Display disk usage by folders in human readable format.
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