How to remove all white spaces from a given text file

Question

I want to remove all the white spaces from a given text file   Is there any shell command available for this   Or  how to use sed for this purpose   I want something like below        cat hello txt   sed        I tried this   cat hello txt   sed  s    g   But it removes only spaces  not tabs

User · Answer

Try this   tr -d    t   lt filename   See the manpage for tr 1  for more details

User · Answer

This is probably the simplest way of doing it   sed -r  s  s   g  filename  gt  output mv ouput filename

User · Answer

Try this   sed -e  s   t    g     d      found here   The first part removes all tabs   t  and spaces  and the second part removes all empty lines

User · Answer

This answer is similar to other however as some people have been complaining that the output goes to STDOUT i am just going to suggest redirecting it to the original file and overwriting it  I would never normally suggest this but sometimes quick and dirty works    cat file txt   tr -d    t n r   gt  file txt

User · Answer

Easiest way for me -           echo  Hello my name is Donald    sed  s     g

User · Answer

hmm   seems like something on the order of sed -e  s    t n r v   g   lt  hello txt should be in the right ballpark  seems to work under cygwin in any case

User · Answer

man tr NAME     tr - translate or delete characters  SYNOPSIS     tr  OPTION     SET1  SET2   DESCRIPTION    Translate  squeeze  and or delete characters from standard     input  writing to standard output    In order to wipe all whitespace including newlines you can try   cat file txt   tr -d    t n r     You can also use the character classes defined by tr  credits to htompkins comment    cat file txt   tr -d    space      For example  in order to wipe just horizontal white space   cat file txt   tr -d    blank

User · Answer

I think you may use sed to wipe out the space while not losing some infomation like changing  to another line   cat hello txt   sed      d s    blank     g

User · Answer

Much simpler to my opinion   sed -r  s  s   g  filename

User · Answer

Dude  Just python test py in your terminal   f   open   home hduser Desktop data csv     r    x   f read   split   f close    y       join x  f   open   home hduser Desktop data csv   w   f write y  f close

User · Answer

If you want to remove ALL whitespace  even newlines   perl -pe  s  s   g  file

[linux] How to remove all white spaces from a given text file

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