27 lines
1,014 B
Bash
Executable file
27 lines
1,014 B
Bash
Executable file
#!/bin/sh
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# Using pipes and redirection to make the echo disturbing
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echo "Je m'appelle Henry"
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echo "Je m'appelle Henry" | tr 'Henry' 'Hanry'
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echo "Je m'appelle Henry" | tr 'appelle' 'alleppe'
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echo "Je m'appelle Henry" | tr 'Je' 'Tu'
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echo "Je m'appelle Henry" | tr 'm' 'p'
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echo "Je m'appelle Henry" | tr 'appe' 'mapp'
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echo "Je m'appelle Henry" | tr "Je m'appelle Henry" "yrneH elleppa'm eJ"
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# Pipes can be used to replace characters (or Char).
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echo "1" | tr '1' '2' # this will show 2 and not 1.
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echo "no" | tr 'no' 'yes' # this will show yes and not no.
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# Pipes can interfer with result of commands, for example :
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echo "Normal LS"
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ls -l
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echo "Anormal LS"
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ls -l | tr 'drwxrwxrjanvdecnovjunavrmayaug' '00'
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echo "The command is : ls -l | tr 'drwxrwxrjanvdecnovjunavrmayaug' '00'"
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echo "Or..."
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ls -l | echo "Ahah !"
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echo 'The Command is : ls -l | echo "Ahah !"'
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echo "This make the command LS in bad condition due to pipe."
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echo "The Tr command is usefull for maintenancy taskes or for changing a sensible value."
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