问题描述：
今天在做rpm相关操作的时候，发现报错，并且还不知道如何入手来解决问题，就左查右查的问题还是没有解决，后来就想，rpm能否打印debug信息，然后也百度了，也没有找到，后来想我为啥不看看rpm的帮助文档呢，就看了下，然后发现通过 -vv参数就能实现这个功能。
示例：
1 [root@testvm03 log]# rpm -e -vv mysql-server-5.1.73-8.el6_8.x86_64 #备注：中划线后面是两个v，不是W 2 D: loading keyring from pubkeys in /var/lib/rpm/pubkeys/*.key 3 D: couldn't find any keys in /var/lib/rpm/pubkeys/*.key 4 D: loading keyring from rpmdb 5 D: opening db environment /var/lib/rpm cdb:mpool:joinenv 6 D: opening db index /var/lib/rpm/Packages rdonly mode=0x0 7 D: locked db index /var/lib/rpm/Packages 8 D: opening db index /var/lib/rpm/Name rdonly mode=0x0 9 D: read h# 323 Header sanity check: OK 10 D: added key gpg-pubkey-c105b9de-4e0fd3a3 to keyring 11 D: Using legacy gpg-pubkey(s) from rpmdb 12 D: read h# 350 Header V3 RSA/SHA1 Signature, key ID c105b9de: OK 13 D: ========== --- mysql-server-5.1.73-8.el6_8 x86_64/linux 0x2 14 D: opening db index /var/lib/rpm/Requirename rdonly mode=0x0 15 D: ========== recording tsort relations 16 D: Requires: ha_archive.so.0()(64bit) YES (added provide) 17 D: Requires: ha_blackhole.so.0()(64bit) YES (added provide) 18 D: Requires: ha_example.so.0()(64bit) YES (added provide) 19 D: Requires: ha_federated.so.0()(64bit) YES (added provide) 20 D: Requires: ha_innodb_plugin.so.0()(64bit) YES (added provide) 21 D: ========== tsorting packages (order, #predecessors, #succesors, tree, depth) 22 D: 0 0 0 0 1 -mysql-server-5.1.73-8.el6_8.x86_64 23 D: erasing packages 24 D: closed db index /var/lib/rpm/Requirename 25 D: closed db index /var/lib/rpm/Name 26 D: closed db index /var/lib/rpm/Packages 27 D: closed db environment /var/lib/rpm 28 D: opening db environment /var/lib/rpm cdb:mpool:joinenv 29 D: opening db index /var/lib/rpm/Packages create mode=0x42 30 D: sanity checking 1 elements 31 D: running pre-transaction scripts 32 D: computing 99 file fingerprints 33 D: computing file dispositions 34 D: opening db index /var/lib/rpm/Basenames create mode=0x42 35 D: 0x0000fd00 4096 799876 374295 / 36 D: ========== +++ mysql-server-5.1.73-8.el6_8 x86_64-linux 0x2 37 D: read h# 350 Header V3 RSA/SHA1 Signature, key ID c105b9de: OK 38 D: erase: mysql-server-5.1.73-8.el6_8 has 99 files, test = 0 39 D: opening db index /var/lib/rpm/Name create mode=0x42 40 D: opening db index /var/lib/rpm/Triggername create mode=0x42 41 D: erase: %preun(mysql-server-5.1.73-8.el6_8.x86_64) scriptlet start 42 D: erase: %preun(mysql-server-5.1.73-8.el6_8.x86_64) execv(/bin/sh) pid 2114 43 + '[' 0 = 0 ']' 44 + /sbin/service mysqld stop 45 + /sbin/chkconfig --del mysqld 46 D: erase: waitpid(2114) rc 2114 status 0 secs 1.078 47 D: fini 040755 2 ( 600, 600) 4096 /var/run/mysqld 48 D: fini 100640 1 ( 600, 600) 1672 /var/log/mysqld.log backup 49 warning: /var/log/mysqld.log saved as /var/log/mysqld.log.rpmsave 50 D: fini 040755 4 ( 600, 600) 4096 /var/lib/mysql 51 D: erase rmdir of /var/lib/mysql failed: Directory not empty 52 D: fini 100644 1 ( 0, 0) 10376 /usr/share/mysql/mysql_test_data_timezone.sql 53 D: fini 100644 1 ( 0, 0) 2855 /usr/share/mysql/mysql_system_tables_data.sql 54 D: fini 100644 1 ( 0, 0) 17285 /usr/share/mysql/mysql_system_tables.sql 55 D: fini 100644 1 ( 0, 0) 45560 /usr/share/mysql/mysql_fix_privilege_tables.sql 56 D: fini 100644 1 ( 0, 0) 2441 /usr/share/mysql/my-small.cnf 57 D: fini 100644 1 ( 0, 0) 4673 /usr/share/mysql/my-medium.cnf 58 D: fini 100644 1 ( 0, 0) 4662 /usr/share/mysql/my-large.cnf 59 D: fini 100644 1 ( 0, 0) 19751 /usr/share/mysql/my-innodb-heavy-4G.cnf 60 D: fini 100644 1 ( 0, 0) 4688 /usr/share/mysql/my-huge.cnf 61 D: fini 100644 1 ( 0, 0) 641349 /usr/share/mysql/fill_help_tables.sql 62 D: fini 100644 1 ( 0, 0) 416238 /usr/share/mysql/errmsg.txt 63 D: fini 100644 1 ( 0, 0) 1626 /usr/share/mysql/config.small.ini 64 D: fini 100644 1 ( 0, 0) 2382 /usr/share/mysql/config.medium.ini 65 D: fini 100644 1 ( 0, 0) 4528 /usr/share/mysql/config.huge.ini 66 D: fini 100644 1 ( 0, 0) 12527 /usr/share/man/man8/mysqlmanager.8.gz 67 D: fini 100644 1 ( 0, 0) 1691 /usr/share/man/man8/mysqld.8.gz 68 D: fini 100644 1 ( 0, 0) 1448 /usr/share/man/man1/resolveip.1.gz 69 D: fini 100644 1 ( 0, 0) 1650 /usr/share/man/man1/resolve_stack_dump.1.gz 70 D: fini 100644 1 ( 0, 0) 1859 /usr/share/man/man1/replace.1.gz 71 D: fini 100644 1 ( 0, 0) 1838 /usr/share/man/man1/perror.1.gz 72 D: fini 100644 1 ( 0, 0) 4970 /usr/share/man/man1/mysqltest.1.gz 73 D: fini 100644 1 ( 0, 0) 416 /usr/share/man/man1/mysqlman.1.gz 74 D: fini 100644 1 ( 0, 0) 4548 /usr/share/man/man1/mysqlimport.1.gz 75 D: fini 100644 1 ( 0, 0) 3187 /usr/share/man/man1/mysqlhotcopy.1.gz 76 D: fini 100644 1 ( 0, 0) 2298 /usr/share/man/man1/mysqldumpslow.1.gz 77 D: fini 100644 1 ( 0, 0) 5381 /usr/share/man/man1/mysqld_safe.1.gz 78 D: fini 100644 1 ( 0, 0) 5592 /usr/share/man/man1/mysqld_multi.1.gz 79 D: fini 100644 1 ( 0, 0) 5695 /usr/share/man/man1/mysqlcheck.1.gz 80 D: fini 100644 1 ( 0, 0) 1609 /usr/share/man/man1/mysqlbug.1.gz 81 D: fini 100644 1 ( 0, 0) 12134 /usr/share/man/man1/mysqlbinlog.1.gz 82 D: fini 100644 1 ( 0, 0) 1654 /usr/share/man/man1/mysql_zap.1.gz 83 D: fini 100644 1 ( 0, 0) 3797 /usr/share/man/man1/mysql_upgrade.1.gz 84 D: fini 100644 1 ( 0, 0) 1833 /usr/share/man/man1/mysql_tzinfo_to_sql.1.gz 85 D: fini 100644 1 ( 0, 0) 1997 /usr/share/man/man1/mysql_setpermission.1.gz 86 D: fini 100644 1 ( 0, 0) 1543 /usr/share/man/man1/mysql_secure_installation.1.gz 87 D: fini 100644 1 ( 0, 0) 2752 /usr/share/man/man1/mysql_install_db.1.gz 88 D: fini 100644 1 ( 0, 0) 2165 /usr/share/man/man1/mysql_fix_privilege_tables.1.gz 89 D: fini 100644 1 ( 0, 0) 1426 /usr/share/man/man1/mysql_fix_extensions.1.gz 90 D: fini 100644 1 ( 0, 0) 2035 /usr/share/man/man1/mysql_convert_table_format.1.gz 91 D: fini 100644 1 ( 0, 0) 2181 /usr/share/man/man1/mysql.server.1.gz 92 D: fini 100644 1 ( 0, 0) 5443 /usr/share/man/man1/myisampack.1.gz 93 D: fini 100644 1 ( 0, 0) 1835 /usr/share/man/man1/myisamlog.1.gz 94 D: fini 100644 1 ( 0, 0) 13582 /usr/share/man/man1/myisamchk.1.gz 95 D: fini 100644 1 ( 0, 0) 2286 /usr/share/man/man1/myisam_ftdump.1.gz 96 D: fini 100644 1 ( 0, 0) 1508 /usr/share/man/man1/msql2mysql.1.gz 97 D: fini 100644 1 ( 0, 0) 1850 /usr/share/man/man1/innochecksum.1.gz 98 D: fini 100644 1 ( 0, 0) 2441 /usr/share/doc/mysql-server-5.1.73/my-small.cnf 99 D: fini 100644 1 ( 0, 0) 4673 /usr/share/doc/mysql-server-5.1.73/my-medium.cnf 100 D: fini 100644 1 ( 0, 0) 4662 /usr/share/doc/mysql-server-5.1.73/my-large.cnf 101 D: fini 100644 1 ( 0, 0) 19751 /usr/share/doc/mysql-server-5.1.73/my-innodb-heavy-4G.cnf 102 D: fini 100644 1 ( 0, 0) 4688 /usr/share/doc/mysql-server-5.1.73/my-huge.cnf 103 D: fini 040755 2 ( 0, 0) 4096 /usr/share/doc/mysql-server-5.1.73 104 D: fini 100755 1 ( 0, 0) 1569176 /usr/libexec/mysqlmanager 105 D: fini 100755 1 ( 0, 0) 7590416 /usr/libexec/mysqld 106 D: fini 100755 1 ( 0, 0) 1259136 /usr/lib64/mysql/plugin/ha_innodb_plugin.so.0.0.0 107 D: fini 120777 1 ( 0, 0) 25 /usr/lib64/mysql/plugin/ha_innodb_plugin.so.0 108 D: fini 120777 1 ( 0, 0) 25 /usr/lib64/mysql/plugin/ha_innodb_plugin.so 109 D: fini 100755 1 ( 0, 0) 58064 /usr/lib64/mysql/plugin/ha_federated.so.0.0.0 110 D: fini 120777 1 ( 0, 0) 21 /usr/lib64/mysql/plugin/ha_federated.so.0 111 D: fini 120777 1 ( 0, 0) 21 /usr/lib64/mysql/plugin/ha_federated.so 112 D: fini 100755 1 ( 0, 0) 33168 /usr/lib64/mysql/plugin/ha_example.so.0.0.0 113 D: fini 120777 1 ( 0, 0) 19 /usr/lib64/mysql/plugin/ha_example.so.0 114 D: fini 120777 1 ( 0, 0) 19 /usr/lib64/mysql/plugin/ha_example.so 115 D: fini 100755 1 ( 0, 0) 30288 /usr/lib64/mysql/plugin/ha_blackhole.so.0.0.0 116 D: fini 120777 1 ( 0, 0) 21 /usr/lib64/mysql/plugin/ha_blackhole.so.0 117 D: fini 120777 1 ( 0, 0) 21 /usr/lib64/mysql/plugin/ha_blackhole.so 118 D: fini 100755 1 ( 0, 0) 54048 /usr/lib64/mysql/plugin/ha_archive.so.0.0.0 119 D: fini 120777 1 ( 0, 0) 19 /usr/lib64/mysql/plugin/ha_archive.so.0 120 D: fini 120777 1 ( 0, 0) 19 /usr/lib64/mysql/plugin/ha_archive.so 121 D: fini 040755 2 ( 0, 0) 4096 /usr/lib64/mysql/plugin 122 D: fini 100755 1 ( 0, 0) 1365648 /usr/bin/resolveip 123 D: fini 100755 1 ( 0, 0) 1369792 /usr/bin/resolve_stack_dump 124 D: fini 100755 1 ( 0, 0) 1369712 /usr/bin/replace 125 D: fini 100755 1 ( 0, 0) 1370544 /usr/bin/perror 126 D: fini 100755 1 ( 0, 0) 187672 /usr/bin/mysqltest 127 D: fini 100755 1 ( 0, 0) 32477 /usr/bin/mysqlhotcopy 128 D: fini 100755 1 ( 0, 0) 7402 /usr/bin/mysqldumpslow 129 D: fini 100755 1 ( 0, 0) 18204 /usr/bin/mysqld_safe 130 D: fini 100755 1 ( 0, 0) 24495 /usr/bin/mysqld_multi 131 D: fini 100755 1 ( 0, 0) 4808 /usr/bin/mysqlbug 132 D: fini 100755 1 ( 0, 0) 3888 /usr/bin/mysql_zap 133 D: fini 100755 1 ( 0, 0) 68176 /usr/bin/mysql_upgrade 134 D: fini 100755 1 ( 0, 0) 1357920 /usr/bin/mysql_tzinfo_to_sql 135 D: fini 100755 1 ( 0, 0) 17473 /usr/bin/mysql_setpermission 136 D: fini 100755 1 ( 0, 0) 8198 /usr/bin/mysql_secure_installation 137 D: fini 100755 1 ( 0, 0) 14646 /usr/bin/mysql_install_db 138 D: fini 100755 1 ( 0, 0) 5834 /usr/bin/mysql_fix_privilege_tables 139 D: fini 100755 1 ( 0, 0) 1261 /usr/bin/mysql_fix_extensions 140 D: fini 100755 1 ( 0, 0) 4245 /usr/bin/mysql_convert_table_format 141 D: fini 100755 1 ( 0, 0) 1671864 /usr/bin/myisampack 142 D: fini 100755 1 ( 0, 0) 1639184 /usr/bin/myisamlog 143 D: fini 100755 1 ( 0, 0) 1756720 /usr/bin/myisamchk 144 D: fini 100755 1 ( 0, 0) 1642392 /usr/bin/myisam_ftdump 145 D: fini 100755 1 ( 0, 0) 10024 /usr/bin/innochecksum 146 D: fini 100755 1 ( 0, 0) 7026 /etc/rc.d/init.d/mysqld 147 D: fini 100644 1 ( 0, 0) 871 /etc/logrotate.d/mysqld 148 D: erase: %postun(mysql-server-5.1.73-8.el6_8.x86_64) scriptlet start149 D: erase: %postun(mysql-server-5.1.73-8.el6_8.x86_64) execv(/bin/sh) pid 2155150 + '[' 0 -ge 1 ']'151 D: erase: waitpid(2155) rc 2155 status 0 secs 0.002152 D: --- h# 350 mysql-server-5.1.73-8.el6_8.x86_64153 D: removing "mysql-server" from Name index.154 D: removing 99 entries from Basenames index.155 D: opening db index /var/lib/rpm/Group create mode=0x42156 D: removing "Applications/Databases" from Group index.157 D: opening db index /var/lib/rpm/Requirename create mode=0x42158 D: removing 68 entries from Requirename index.159 D: opening db index /var/lib/rpm/Providename create mode=0x42160 D: removing 8 entries from Providename index.161 D: opening db index /var/lib/rpm/Conflictname create mode=0x42162 D: removing 1 entries from Conflictname index.163 D: opening db index /var/lib/rpm/Dirnames create mode=0x42164 D: removing 14 entries from Dirnames index.165 D: opening db index /var/lib/rpm/Requireversion create mode=0x42166 D: removing 68 entries from Requireversion index.167 D: opening db index /var/lib/rpm/Provideversion create mode=0x42168 D: removing 8 entries from Provideversion index.169 D: opening db index /var/lib/rpm/Installtid create mode=0x42170 D: removing 1 entries from Installtid index.171 D: opening db index /var/lib/rpm/Sigmd5 create mode=0x42172 D: removing 1 entries from Sigmd5 index.173 D: opening db index /var/lib/rpm/Sha1header create mode=0x42174 D: removing "216aec29bd69c731019b4def5cf20d01f47cd1e0" from Sha1header index.175 D: opening db index /var/lib/rpm/Filedigests create mode=0x42176 D: removing 99 entries from Filedigests index.177 D: running post-transaction scripts178 D: closed db index /var/lib/rpm/Filedigests179 D: closed db index /var/lib/rpm/Sha1header180 D: closed db index /var/lib/rpm/Sigmd5181 D: closed db index /var/lib/rpm/Installtid182 D: closed db index /var/lib/rpm/Provideversion183 D: closed db index /var/lib/rpm/Requireversion184 D: closed db index /var/lib/rpm/Dirnames185 D: closed db index /var/lib/rpm/Triggername186 D: closed db index /var/lib/rpm/Conflictname187 D: closed db index /var/lib/rpm/Providename188 D: closed db index /var/lib/rpm/Requirename189 D: closed db index /var/lib/rpm/Group190 D: closed db index /var/lib/rpm/Basenames191 D: closed db index /var/lib/rpm/Name192 D: closed db index /var/lib/rpm/Packages193 D: closed db environment /var/lib/rpm
备注：这样，就能在出现执行命令报错的时候，将调试信息打印出来了，知道执行该命令时，都做了些什么事情。
文档创建时间：2019年3月8日15:08:18