Using the Linux tr command
I need help with this question:
If the process pipeline
echo "message" | tr a-wxyz d-zabcrepresents (Caesar cipher) encryption, what represents decryption?
I've run this command in the question and it converts "message" to "phvvdjh", so it increased each letter by 3 (so m --> p, e --> h...).
How do I go back from "phvvdjh" to "message"?
I don't really know how the "tr" command works or how to do this.
linux
edited Nov 22 '18 at 23:25
halfer
14.6k758112
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
add a comment |
I need help with this question:
If the process pipeline
echo "message" | tr a-wxyz d-zabcrepresents (Caesar cipher) encryption, what represents decryption?
I've run this command in the question and it converts "message" to "phvvdjh", so it increased each letter by 3 (so m --> p, e --> h...).
How do I go back from "phvvdjh" to "message"?
I don't really know how the "tr" command works or how to do this.
linux
edited Nov 22 '18 at 23:25
halfer
14.6k758112
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
add a comment |
I need help with this question:
If the process pipeline
echo "message" | tr a-wxyz d-zabcrepresents (Caesar cipher) encryption, what represents decryption?
I've run this command in the question and it converts "message" to "phvvdjh", so it increased each letter by 3 (so m --> p, e --> h...).
How do I go back from "phvvdjh" to "message"?
I don't really know how the "tr" command works or how to do this.
linux
edited Nov 22 '18 at 23:25
halfer
14.6k758112
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
I need help with this question:
If the process pipeline
echo "message" | tr a-wxyz d-zabcrepresents (Caesar cipher) encryption, what represents decryption?
I've run this command in the question and it converts "message" to "phvvdjh", so it increased each letter by 3 (so m --> p, e --> h...).
How do I go back from "phvvdjh" to "message"?
I don't really know how the "tr" command works or how to do this.
linux
linux
edited Nov 22 '18 at 23:25
halfer
14.6k758112
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
edited Nov 22 '18 at 23:25
halfer
14.6k758112
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
edited Nov 22 '18 at 23:25
halfer
14.6k758112
edited Nov 22 '18 at 23:25
halfer
14.6k758112
edited Nov 22 '18 at 23:25
halfer
14.6k758112
14.6k758112
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
asked Nov 22 '18 at 1:05
MandingoMandingo
34229
34229
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Just replace the "to" section in tr with the "from" section
echo "phvvdjh" | tr d-zabc a-wxyz
its a letter for letter conversion, but is commonly confused with regex, such as 'sed'
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Just replace the "to" section in tr with the "from" section
echo "phvvdjh" | tr d-zabc a-wxyz
its a letter for letter conversion, but is commonly confused with regex, such as 'sed'
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
add a comment |
Just replace the "to" section in tr with the "from" section
echo "phvvdjh" | tr d-zabc a-wxyz
its a letter for letter conversion, but is commonly confused with regex, such as 'sed'
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
add a comment |
Just replace the "to" section in tr with the "from" section
echo "phvvdjh" | tr d-zabc a-wxyz
its a letter for letter conversion, but is commonly confused with regex, such as 'sed'
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
Just replace the "to" section in tr with the "from" section
echo "phvvdjh" | tr d-zabc a-wxyz
its a letter for letter conversion, but is commonly confused with regex, such as 'sed'
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
answered Nov 22 '18 at 1:14
Michael G.Michael G.
2231316
2231316
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
add a comment |
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
Oh wow thanks, that was easy!
– Mandingo
Nov 22 '18 at 1:41
add a comment |
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