Change case of string to "Title case" (Kate name for it).

L_Carver · 06-30-2017, 12:13 PM

I'm looking for a way to change the case of every first letter of a string with more than one word in it, such as
parlour car
to
Parlour Car.

I prefer, for my own reasons (a clue to one of which is in two lines of my signature), to do so on the command line rather than in\with Kate or Notepadqq.

Is there a simple way, in bash or perl, to accomplish this?

Carver

scasey · 06-30-2017, 12:28 PM

Quote:

Originally Posted by L_Carver

I'm looking for a way to change the case of every first letter of a string with more than one word in it, such as
parlour car
to
Parlour Car.

I prefer, for my own reasons (a clue to one of which is in two lines of my signature), to do so on the command line rather than in\with Kate or Notepadqq.

Is there a simple way, in bash or perl, to accomplish this?

Carver

Yes there is. What have you tried?

hydrurga · 06-30-2017, 12:30 PM

Entering bash "title case" in Google Search produces the following as the first result:

http://www.commandlinefu.com/command...-to-title-case

which suggests:

Code:

echo "this is a test" | sed 's/.*/\L&/; s/[a-z]*/\u&/g'

rtmistler · 06-30-2017, 01:03 PM

There is at least one Linux shell command which can change case, and there are a number of commands which can replace characters, thereby also changing case. Have look at the tr command, however I believe awk and sed can obviously edit files as well. I also feel it depends whether you wish to do this using Perl or a bash script. I'm guessing you can call Linux commands using Perl much like you can do this using a bash script.

It would be helpful to know if you have yet tried anything, or at the very least, to know whether you're more comfortable with bash or Perl.

BW-userx · 06-30-2017, 01:43 PM

Code:

userx%slackwhere ⚡ imaging ⚡> foo="gg boo"
userx%slackwhere ⚡ imaging ⚡> doo=${foo^}
userx%slackwhere ⚡ imaging ⚡> echo $doo
Gg boo

userx%slackwhere ⚡ imaging ⚡> echo "$(echo $foo | sed -e "s/\b\(.\)/\u\1/g")"
Gg Boo

syg00 · 06-30-2017, 07:40 PM

I use a variant of @hydrurga's offering, but using word bounding. Never seen the need to convert to lowercase first.

BW-userx · 06-30-2017, 07:50 PM

I believe that dropping it to lower case first ensures proper results.

Code:

userx%slackwhere ⚡ ~ ⚡> foo="DO FO FO FO ER TERTEE"                             
userx%slackwhere ⚡ ~ ⚡> echo  "$(echo $foo | sed -e "s/\b\(.\)/\u\1/g")"
DO FO FO FO ER TERTEE
userx%slackwhere ⚡ ~ ⚡> foo="Do be de fo ra"                                    
userx%slackwhere ⚡ ~ ⚡> echo  "$(echo $foo | sed -e "s/\b\(.\)/\u\1/g")"
Do Be De Fo Ra


userx%slackwhere ⚡ ~ ⚡> foo="DO FO FO FO ER TERTEE"                             
userx%slackwhere ⚡ ~ ⚡> echo $foo | sed 's/.*/\L&/; s/[a-z]*/\u&/g'
Do Fo Fo Fo Er Tertee

syg00 · 06-30-2017, 09:40 PM

The OP only wanted to change the first letter - I learnt a long ime ago not to munge the users data beyond what they asked for.
Whether it was sensible was a cause perhaps for a query, but I did what I was asked for. That way other arses got kicked, not mine.