OpenEuler shell基础 输出重定向 覆盖与追加

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• OpenEuler shell基础 输出重定向 覆盖与追加

• > 为覆盖

[developer@developer Desktop]$ ls > ls.log
[developer@developer Desktop]$ cat ls.log 
blog.desktop
dev_line.desktop
gitcode.desktop
hw.sh
iDME╔ш╝╞╖■╬ё.desktop
lab.desktop
ls.log
nohup.out
project_resoruce.desktop
storage.desktop


[developer@developer Desktop]$ ls -l > ls.log
[developer@developer Desktop]$ cat ls.log 
总用量 36
-rwxrwxr-x 1 developer developer 229  1月 14 10:02 blog.desktop
-rwxrwxr-x 1 developer developer 252  1月 14 10:03 dev_line.desktop
-rwxrwxr-x 1 developer developer 219  1月 14 10:04 gitcode.desktop
-rwxrwxr-x 1 developer developer  31  3月 10 21:14 hw.sh
-rwxrwxr-x 1 developer developer 243  1月 14 10:02 iDME╔ш╝╞╖■╬ё.desktop
-rwxrwxr-x 1 developer developer 231  1月 14 10:03 lab.desktop
-rw-rw-r-- 1 developer developer   0  3月 10 21:30 ls.log
-rw------- 1 developer developer  12  3月 10 21:22 nohup.out
-rwxrwxr-x 1 developer developer 276  1月 14 10:04 project_resoruce.desktop
-rwxrwxr-x 1 developer developer 262  1月 14 10:03 storage.desktop
[developer@developer Desktop]$ 

• >> 为追加

[developer@developer Desktop]$ ls -l >> ls.log
[developer@developer Desktop]$ cat ls.log 
总用量 36
-rwxrwxr-x 1 developer developer 229  1月 14 10:02 blog.desktop
-rwxrwxr-x 1 developer developer 252  1月 14 10:03 dev_line.desktop
-rwxrwxr-x 1 developer developer 219  1月 14 10:04 gitcode.desktop
-rwxrwxr-x 1 developer developer  31  3月 10 21:14 hw.sh
-rwxrwxr-x 1 developer developer 243  1月 14 10:02 iDME╔ш╝╞╖■╬ё.desktop
-rwxrwxr-x 1 developer developer 231  1月 14 10:03 lab.desktop
-rw-rw-r-- 1 developer developer   0  3月 10 21:30 ls.log
-rw------- 1 developer developer  12  3月 10 21:22 nohup.out
-rwxrwxr-x 1 developer developer 276  1月 14 10:04 project_resoruce.desktop
-rwxrwxr-x 1 developer developer 262  1月 14 10:03 storage.desktop
总用量 40
-rwxrwxr-x 1 developer developer 229  1月 14 10:02 blog.desktop
-rwxrwxr-x 1 developer developer 252  1月 14 10:03 dev_line.desktop
-rwxrwxr-x 1 developer developer 219  1月 14 10:04 gitcode.desktop
-rwxrwxr-x 1 developer developer  31  3月 10 21:14 hw.sh
-rwxrwxr-x 1 developer developer 243  1月 14 10:02 iDME╔ш╝╞╖■╬ё.desktop
-rwxrwxr-x 1 developer developer 231  1月 14 10:03 lab.desktop
-rw-rw-r-- 1 developer developer 690  3月 10 21:30 ls.log
-rw------- 1 developer developer  12  3月 10 21:22 nohup.out
-rwxrwxr-x 1 developer developer 276  1月 14 10:04 project_resoruce.desktop
-rwxrwxr-x 1 developer developer 262  1月 14 10:03 storage.desktop
[developer@developer Desktop]$