remove white space from the end of line in linux

Question

i have file in which i want to remove white space from the end of line test txt is as following  there is white space at the end of line   ath-miRf10005-akr  ath-miRf10018-akr  ath-miRf10019-akr ath-miRf10020-akr  ath-miRf10023-akr ath-miRf10024-akr    i used sed  s   s    but it is not working

User · Answer

This might work for you  GNU sed    sed -ri     s   s     file   This looks for whitespace at the end of the line and and if present removes it

User · Answer

Try using  cat kb txt   sed -e  s  s   g

User · Answer

If your lines are exactly the way you depict them no leading or embedded spaces   the following should serve as well  awk    1  1 print   file txt

User · Answer

Try this   sed -i  s  s      youfile txt

User · Answer

sed -i  s    blank     1        YourFile     blank   is for space  tab mainly and  1   to exclude  no space at the end  of the substitution process  no big significant impact if line are short and file are small

User · Answer

Use either a simple blank   or   blank    to remove all possible spaces at the end of the line   sed  s        file   Using the   blank   class you are removing spaces and tabs   sed  s    blank         file   Note this is POSIX  hence compatible in both GNU sed and BSD   For just GNU sed you can use the GNU extension  s  to match spaces and tabs  as described in BaBL86 s answer  See POSIX specifications on Basic Regular Expressions     Let s test it with a simple file consisting on just lines  two with just spaces and the last one also with tabs     cat -vet file hello     bye     ha I          there is a tab here   Remove just spaces     sed  s        file   cat -vet - hello  bye  ha I          tab is still here    Remove spaces and tabs     sed  s    blank         file   cat -vet - hello  bye  ha            tab was removed

[linux] remove white space from the end of line in linux

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