This is on Fedora 34 server.
$ uname -a
Linux fedora 5.11.16-300.fc34.x86_64 #1 SMP Wed Apr 21 13:18:33 UTC 2021
x86_64 x86_64 x86_64 GNU/Linux
$ comm --version
comm (GNU coreutils) 8.32
Consider the 2 attached files f1.txt and f2.txt. They're already sorted.
$ comm -12 f1.txt f2.txt
1O55
1O56
This means that 1055 and 1056 are in both files. However, this isn't
true.
$ fgrep 1055 f1.txt f2.txt
f1.txt:1055
$ fgrep 1056 f1.txt f2.txt
f1.txt:1056
Note that these lines are only in f1.txt. This looks like
a bug.
Please advise.
Cordially,
Jon Forrest
105
1050
1052
1054
1055
1056
1057
1058
1059
106
1061
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1083
1084
1089
109
1090
1091
1092
1093
1094
1095
1096
1097
110
1101
1102
1105
1107
1109
110a
111
1110
1111
1112
1113
1114
1115
1116
1117
111a
112
1120
1122
1124
1126
1127
1128
1129
113
1130
1131
1132
1133
1134
1135
1136
1137
1138
1142
1143
1144
1148
115
1150
1151
1152
1154
1155
1156
1157
1158
1159
116
1160
1161
1162
1163
1164
1167
1168
1169
117
1937
1938
1939
194
1940
1941
1942
1944
1947
1948
1949
195
1950
1951
196
1965
1966
1967
1970
1972
1973
1974
1979
198
1981
1983
1984
1985
1986
1988
1989
199
1990
1992
1993
1994
1995
1997
1998
1O55
1O56
2000
2001
2005
2006
2008
2009
201
2011
2012
2013
2014
2017
2018
2019
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2033
2036
2038
2041
2042
2043
2046
2047
2052
2053
2056
2057
2059
2077
2079
2086
2100
2105
2107
2108
2109
2111
2112
2115
2117
2118
2119
2120
2123
2125
2127
2128
1085
1086
1087
1231c
1249
1322
1460
1461
1462
1463
1495
1497
1498
152
1523
1524
1526
1527
1529
1530
1532
1533
1540
1568
1578
1579
1579a
1579b
1613
1630
1631
1632
1633
1653
1654
1655
1656
1661
1674
1675
1676
1677
1685
1686
1687
1690
1719
1721
1722
1742
1758
1759
1815
1816
1817
1819
183
1849
1850
1851
1852
1919
1920
1921
1922
1924
1936
197
1O16
1O41
1O52
1O53
1O54
1O55
1O56
2021e
2021h
2021j
2051
2078
2080
2088
2089
2092
2162a
2162d
2186
2198
2199
2200
2201
2202
2233
2234
2235
2236
2237
2238
2239
