Linux Shell Commands
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Created by:
NarpalDhillon on April 23, 2012
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13 terms
Terms | Definitions |
|---|---|
 | | The | takes the output from the command on the left, and "pipes" it to the command on the right. |
| < | The < will take and send the input from the file on the right to the program on the left. |
| > | The > takes the output of the command on the left, then writes it to the file on the right. |
| >> | The >> takes the output of the command on the left, then appends it to the file on the right. |
| * | matches anything in a wildcard like *.txt ("anything ending in .txt") |
| find | find STARTDIR -name WILDCARD -print |
| Change PATH for your compute | ????????/ |
| list out all the environment variables you've found and then go look up what they are online. | ...as |
| Read the man page for env again. What else can it do? | sa |
| xargs sudo | rm `find tmp -maxdepth 1 -name '*.mp3'` is intended to remove all tmp/*.mp3 files (and ignore any subdirectories), but can fail with an "Argument list too long" message. This exact equivalent: find tmp -maxdepth 1 -name '*.mp3' -maxdepth 1 | xargs rm http://www.linuxplanet.com/linuxplanet/tutorials/6522/1 |
| chmod | chmod : change mode , change file access permissions [root@broccoli dhillon]# chmod 777 test1.txt -rwxrwxrwx 2 root root 247664 May 3 11:39 test1.txt chmod 644 test1.txt -rw-r--r-- 2 root root 247664 May 3 11:39 test1.txt |
| chown | chown = change the owner of a file ex --> chown bob hello.txt |
| sudo | "substitute user do" or "super user do" . allows a permitted user to execute a command as the superuser or another user (most often the root user) ex--> sudo bob |
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