In a bash script such append.sh file, write the following code:
#!/bin/bash
A=/root/tmp/test/a.txt
B=/root/tmp/test/b.txt
cat $A >> $B
The
>>
redirects the output of the cat
command (which output file A
) to the file B
. But instead of overwriting contents of B
, it appends to it. If you use a single >
, it will instead overwrite any previous content in B
.
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