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Created page with '{{lowercase title}} Count the number of slashes in a string: <pre> echo "/incoming/data/" | tr -dc '/' | wc -c </pre>' |
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{{lowercase title}} | {{lowercase title}} | ||
translate or delete characters | |||
http://linux.die.net/man/1/tr | |||
http://www.cyberciti.biz/faq/how-to-use-linux-unix-tr-command/ | |||
Count the number of slashes in a string: | Count the number of slashes in a string: | ||
<pre> | <pre> | ||
echo "/incoming/data/" | tr -dc '/' | wc -c | echo "/incoming/data/" | tr -dc '/' | wc -c # gives 3 | ||
</pre> | |||
Convert to uppercase: | |||
<pre> | |||
echo 'linux' | tr "[:lower:]" "[:upper:]" # LINUX | |||
echo 'linux' | tr "a-z" "A-Z" # LINUX | |||
</pre> | |||
Remove all non-printable characters from myfile.txt | |||
<pre> | |||
tr -cd "[:print:]" < myfile.txt | |||
</pre> | </pre> | ||
Latest revision as of 18:08, 20 April 2011
translate or delete characters
http://www.cyberciti.biz/faq/how-to-use-linux-unix-tr-command/
Count the number of slashes in a string:
echo "/incoming/data/" | tr -dc '/' | wc -c # gives 3
Convert to uppercase:
echo 'linux' | tr "[:lower:]" "[:upper:]" # LINUX echo 'linux' | tr "a-z" "A-Z" # LINUX
Remove all non-printable characters from myfile.txt
tr -cd "[:print:]" < myfile.txt