Linux Command Chaning

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[user1@localhost ~]$ ls ;ls -l
Desktop Documents Downloads Music Pictures Public Templates Videos
total 32
drwxr-xr-x. 2 user1 user1 4096 2009-12-02 11:06 Desktop
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Documents
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 12:52 Downloads
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Music
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Pictures
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Public
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Templates
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Videos
[user1@localhost ~]$ ls1 ;ls -l
bash: ls1: command not found
total 32
drwxr-xr-x. 2 user1 user1 4096 2009-12-02 11:06 Desktop
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Documents
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 12:52 Downloads
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Music
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Pictures
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Public
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Templates
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Videos
[user1@localhost ~]$ ls && ls -l
Desktop Documents Downloads Music Pictures Public Templates Videos
total 32
drwxr-xr-x. 2 user1 user1 4096 2009-12-02 11:06 Desktop
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Documents
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 12:52 Downloads
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Music
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Pictures
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Public
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Templates
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Videos
[user1@localhost ~]$ ls1 && ls -l
bash: ls1: command not found
[user1@localhost ~]$ ls1 || ls -l
bash: ls1: command not found
total 32
drwxr-xr-x. 2 user1 user1 4096 2009-12-02 11:06 Desktop
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Documents
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 12:52 Downloads
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Music
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Pictures
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Public
drwxr-xr-x. 2 user1 user1 4096 2009-11-28 10:36 Templates
drwxr-xr-x. 3 user1 user1 4096 2009-11-28 13:35 Videos
[user1@localhost ~]$

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