he.txtbash:he.txt:cannotoverwriteexistingfile If you want to cancel the restriction, change set-o to set+o[root@stu227he]#set+onoclobber[root@stu227he]#echo"123">he.txt[root@stu227he]#c"/> he.txtbash:he.txt:cannotoverwriteexistingfile If you want to cancel the restriction, change set-o to set+o[root@stu227he]#set+onoclobber[root@stu227he]#echo"123">he.txt[root@stu227he]#c">
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Solution to CentOS file overwriting problem

王林
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2024-01-03 16:34:24717browse

[root@stu227 he]# touch he.txt

[root@stu227 he]# set -o noclobber

[root@stu227 he]# echo "123" > he.txt

bash: he.txt: cannot overwrite existing file

If you want to cancel the restriction, change set -o to set o

[root@stu227 he]# set o noclobber

[root@stu227 he]# echo "123" > he.txt

[root@stu227 he]# cat he.txt

123

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