Bash : Delete some characters from a file with TR

in this little example of usage of the command tr
we want to clean a file so the values contained in it can be used
Example File

<10>
<23>
<34>
<78>
<44>
<12>
<40>
<81>
<30>
<11>
<14>
<09>
<02>
<66>
xxxxxxxxxx
 
<10>
<23>
<34>
<78>
<44>
<12>
<40>
<81>
<30>
<11>
<14>
<09>
<02>
<66>

In my example i wish to only keep the value and deleting the character < and >

 cat file| tr -d '<>'
xxxxxxxxxx
 
 cat file| tr -d '<>'

the tr command used with the -d (delete) option will allow you to delete the list of characters contained between the quotes.

You will obtain the following result

10
23
34
78
44
12
40
81
30
11
14
09
02
66
xxxxxxxxxx
 
10
23
34
78
44
12
40
81
30
11
14
09
02
66