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“sort -nu” on uuids
How does -k flag work in sort command?sort -u (unique) works for multi-keys but not for a single keySort -u without sorting but with better uniqueness?sort and uniq columns individually in a text fileUnix sort function doesn't completely sort string with numbersSort script output but keep lines togetherbash unique line idget unique value for each line with unix commandSort not sorting lines with a pipe '|' in it correctlysort -n doesn't work?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
anyone could explain why "sort -nu" returns only 1 unique line in example below?
$ cat /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
1e971713-31e4-62d0-a3d1-37c0610c10e5
$ sort -nu /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
$
shouldn't there be two unique lines on output like on "sort -u"?
$ sort -u /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
$
sort uuid
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
add a comment |
anyone could explain why "sort -nu" returns only 1 unique line in example below?
$ cat /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
1e971713-31e4-62d0-a3d1-37c0610c10e5
$ sort -nu /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
$
shouldn't there be two unique lines on output like on "sort -u"?
$ sort -u /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
$
sort uuid
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
3
Why are you using-nto sort non-numerical data? I'm assuming it stops comparing after the initial1(no more digits) and since all lines starts with1, there is only one "unique" key. Can't say this is what happens for certain, but it behaves like it.
– Kusalananda♦
8 hours ago
@Kusalananda that certainly seems to be the case for the GNU implementation (as one can verify by adding the--debugoption)
– steeldriver
8 hours ago
@steeldriver BSDsorton OpenBSD behaves the same, although--debugthere shows the whole line as the key. I'm assuming it then usesstrtol()to convert the keys to integers, which would return the initial1only.
– Kusalananda♦
8 hours ago
add a comment |
anyone could explain why "sort -nu" returns only 1 unique line in example below?
$ cat /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
1e971713-31e4-62d0-a3d1-37c0610c10e5
$ sort -nu /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
$
shouldn't there be two unique lines on output like on "sort -u"?
$ sort -u /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
$
sort uuid
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
anyone could explain why "sort -nu" returns only 1 unique line in example below?
$ cat /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
1e971713-31e4-62d0-a3d1-37c0610c10e5
$ sort -nu /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
$
shouldn't there be two unique lines on output like on "sort -u"?
$ sort -u /tmp/test_
1e971713-31e4-62d0-a3d1-37c0610c10e5
1e97d59f-bc32-6126-b7b1-0b52ddd35273
$
sort uuid
sort uuid
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
edited 7 hours ago
Jeff Schaller♦
47.2k11 gold badges68 silver badges154 bronze badges
47.2k11 gold badges68 silver badges154 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
asked 9 hours ago
ChrisChris
3305 silver badges15 bronze badges
3305 silver badges15 bronze badges
3
Why are you using-nto sort non-numerical data? I'm assuming it stops comparing after the initial1(no more digits) and since all lines starts with1, there is only one "unique" key. Can't say this is what happens for certain, but it behaves like it.
– Kusalananda♦
8 hours ago
@Kusalananda that certainly seems to be the case for the GNU implementation (as one can verify by adding the--debugoption)
– steeldriver
8 hours ago
@steeldriver BSDsorton OpenBSD behaves the same, although--debugthere shows the whole line as the key. I'm assuming it then usesstrtol()to convert the keys to integers, which would return the initial1only.
– Kusalananda♦
8 hours ago
add a comment |
3
Why are you using-nto sort non-numerical data? I'm assuming it stops comparing after the initial1(no more digits) and since all lines starts with1, there is only one "unique" key. Can't say this is what happens for certain, but it behaves like it.
– Kusalananda♦
8 hours ago
@Kusalananda that certainly seems to be the case for the GNU implementation (as one can verify by adding the--debugoption)
– steeldriver
8 hours ago
@steeldriver BSDsorton OpenBSD behaves the same, although--debugthere shows the whole line as the key. I'm assuming it then usesstrtol()to convert the keys to integers, which would return the initial1only.
– Kusalananda♦
8 hours ago
3
3
Why are you using
-n to sort non-numerical data? I'm assuming it stops comparing after the initial 1 (no more digits) and since all lines starts with 1, there is only one "unique" key. Can't say this is what happens for certain, but it behaves like it.– Kusalananda♦
8 hours ago
Why are you using
-n to sort non-numerical data? I'm assuming it stops comparing after the initial 1 (no more digits) and since all lines starts with 1, there is only one "unique" key. Can't say this is what happens for certain, but it behaves like it.– Kusalananda♦
8 hours ago
@Kusalananda that certainly seems to be the case for the GNU implementation (as one can verify by adding the
--debug option)– steeldriver
8 hours ago
@Kusalananda that certainly seems to be the case for the GNU implementation (as one can verify by adding the
--debug option)– steeldriver
8 hours ago
@steeldriver BSD
sort on OpenBSD behaves the same, although --debug there shows the whole line as the key. I'm assuming it then uses strtol() to convert the keys to integers, which would return the initial 1 only.– Kusalananda♦
8 hours ago
@steeldriver BSD
sort on OpenBSD behaves the same, although --debug there shows the whole line as the key. I'm assuming it then uses strtol() to convert the keys to integers, which would return the initial 1 only.– Kusalananda♦
8 hours ago
add a comment |
1 Answer
1
active
oldest
votes
@Kusalananda is right.
https://www.gnu.org/software/coreutils/manual/html_node/sort-invocation.html
The commands
sort -uandsort | uniqare equivalent, but this
equivalence does not extend to arbitrary sort options. For example,
sort -n -uinspects only the value of the initial numeric string
when checking for uniqueness, whereassort -n | uniqinspects the
entire line.
As your numeric string string is 1, you only get the first line.
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
add a comment |
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@Kusalananda is right.
https://www.gnu.org/software/coreutils/manual/html_node/sort-invocation.html
The commands
sort -uandsort | uniqare equivalent, but this
equivalence does not extend to arbitrary sort options. For example,
sort -n -uinspects only the value of the initial numeric string
when checking for uniqueness, whereassort -n | uniqinspects the
entire line.
As your numeric string string is 1, you only get the first line.
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
add a comment |
@Kusalananda is right.
https://www.gnu.org/software/coreutils/manual/html_node/sort-invocation.html
The commands
sort -uandsort | uniqare equivalent, but this
equivalence does not extend to arbitrary sort options. For example,
sort -n -uinspects only the value of the initial numeric string
when checking for uniqueness, whereassort -n | uniqinspects the
entire line.
As your numeric string string is 1, you only get the first line.
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
add a comment |
@Kusalananda is right.
https://www.gnu.org/software/coreutils/manual/html_node/sort-invocation.html
The commands
sort -uandsort | uniqare equivalent, but this
equivalence does not extend to arbitrary sort options. For example,
sort -n -uinspects only the value of the initial numeric string
when checking for uniqueness, whereassort -n | uniqinspects the
entire line.
As your numeric string string is 1, you only get the first line.
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
@Kusalananda is right.
https://www.gnu.org/software/coreutils/manual/html_node/sort-invocation.html
The commands
sort -uandsort | uniqare equivalent, but this
equivalence does not extend to arbitrary sort options. For example,
sort -n -uinspects only the value of the initial numeric string
when checking for uniqueness, whereassort -n | uniqinspects the
entire line.
As your numeric string string is 1, you only get the first line.
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
edited 8 hours ago
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
answered 8 hours ago
FreddyFreddy
5,3561 gold badge5 silver badges22 bronze badges
5,3561 gold badge5 silver badges22 bronze badges
add a comment |
add a comment |
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3
Why are you using
-nto sort non-numerical data? I'm assuming it stops comparing after the initial1(no more digits) and since all lines starts with1, there is only one "unique" key. Can't say this is what happens for certain, but it behaves like it.– Kusalananda♦
8 hours ago
@Kusalananda that certainly seems to be the case for the GNU implementation (as one can verify by adding the
--debugoption)– steeldriver
8 hours ago
@steeldriver BSD
sorton OpenBSD behaves the same, although--debugthere shows the whole line as the key. I'm assuming it then usesstrtol()to convert the keys to integers, which would return the initial1only.– Kusalananda♦
8 hours ago