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Top Forums UNIX for Dummies Questions & Answers Issues with sort and forward slash Post 302850695 by shamrock on Thursday 5th of September 2013 11:15:12 AM
Old 09-05-2013
Quote:
Originally Posted by newbie2010
I saw another post on a forum where someone was having issues with the tab key:

Unix sort on multiple fields

I am not sure if this is a similar issue. Has anyone had to escape the forward slash or is there a way to find the version of the sort command?
No need to escape the forward slash but specify the exact location of the numerical column...and if the input file has all entries with the last column being of the form "trees[0-9]+" then the following sort should work on all platforms...
Code:
sort -t / -k3.6n file

And if the length of the string literal varies then you'd have to do more processing before it can be sorted...
 

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SORT(1) 						      General Commands Manual							   SORT(1)

NAME
sort - sort a file of ASCII lines SYNOPSIS
sort [-bcdfimnru] [-tc] [-o name] [+pos1] [-pos2] file ... OPTIONS
-b Skip leading blanks when making comparisons -c Check to see if a file is sorted -d Dictionary order: ignore punctuation -f Fold upper case onto lower case -i Ignore nonASCII characters -m Merge presorted files -n Numeric sort order -o Next argument is output file -r Reverse the sort order -t Following character is field separator -u Unique mode (delete duplicate lines) EXAMPLES
sort -nr file # Sort keys numerically, reversed sort +2 -4 file # Sort using fields 2 and 3 as key sort +2 -t: -o out # Field separator is : sort +.3 -.6 # Characters 3 through 5 form the key DESCRIPTION
Sort sorts one or more files. If no files are specified, stdin is sorted. Output is written on standard output, unless -o is specified. The options +pos1 -pos2 use only fields pos1 up to but not including pos2 as the sort key, where a field is a string of characters delim- ited by spaces and tabs, unless a different field delimiter is specified with -t. Both pos1 and pos2 have the form m.n where m tells the number of fields and n tells the number of characters. Either m or n may be omitted. SEE ALSO
comm(1), grep(1), uniq(1). SORT(1)
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