linux - Issue with unix sort -


this more of doubt question.

so have input file this:

$ cat test class||sw sw-explr bot|results|id,23,0a522b36-556f-4116-b485-adcf132b6cad,20130325,/html/body/div/div[3]/div[2]/div[2]/div[3]/div/div/div/div/div/div[2]/div/div/ul/li[4]/div/img class||sw sw-explr bot|results|id,40,30cefa2c-6ebf-485e-b49c-3a612fe3fd73,20130323,/html/body/div/div[3]/div[2]/div[3]/div[3]/div/div/div/div/div[3]/div/div/ul/li[8]/div/img class||sw sw-explr bot|results|id,3,72805487-72c3-4173-947f-e5abed6ea1e4,20130324,/html/body/div/div[3]/div[2]/div[2]/div[2]/div/div/div/div/div/div[3]/div/div/div[2]/ul/li[20]/div/img

kind of defining element in html page. comma separated 5 columns can considered.

i want sort file respect second column, i.e. columns having 23,40,3.

i not sure why unix sort isn't working.

these queries tried, surprisingly none gave me desired result.

cat test | sort -nt',' -k2  cat test | sort -n -t, -k2  cat test | sort -n -t$',' -k2  cat test | sort -t"," -k2  cat test | sort -n -k2

is there sort don't know?

this didn't cause me problem separated columns, sorted, joined again. why did not sort work??

nb:- if remove $3 of file , sort, works fine!

this line should work you:

sort -t, -n  -k2,2 test
  • you don't need cat test|sort, sort file
  • the default end pos of -k end of line. if sort -k2 means sort 2nd field till end of line. in fact need sort exact 2nd field. , explains why sort worked if removed 3rd col.

if test example:

kent$  sort -t, -n  -k2,2 file class||sw sw-explr bot|results|id,3,72805487-72c3-4173-947f-e5abed6ea1e4,20130324,/html/body/div/div[3]/div[2]/div[2]/div[2]/div/div/div/div/div/div[3]/div/div/div[2]/ul/li[20]/div/img class||sw sw-explr bot|results|id,23,0a522b36-556f-4116-b485-adcf132b6cad,20130325,/html/body/div/div[3]/div[2]/div[2]/div[3]/div/div/div/div/div/div[2]/div/div/ul/li[4]/div/img class||sw sw-explr bot|results|id,40,30cefa2c-6ebf-485e-b49c-3a612fe3fd73,20130323,/html/body/div/div[3]/div[2]/div[3]/div[3]/div/div/div/div/div[3]/div/div/ul/li[8]/div/img

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