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一次删除多个具有特定格式的文件

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一次删除多个具有特定格式的文件

我们在登录主机上使用 freenx-server，用户从终端通过 NoMachine 客户端访问它们。由于与 freenx 相关的许多错误以及我们的预算不允许使用完整的商业版本，当连接在终止后没有自行清理时（通常是无意的），我们最终会导致某些用户拥有多个会话残留。以下是 /etc/nxserver.log 的示例摘录：

Display Type             Session ID                       Options  Depth Screen         Status      Session Name
------- ---------------- -------------------------------- -------- ----- -------------- ----------- ------------------------------
33091   unix-gnome       189E20515FC5624507CAF25C836FB426 --D--PSA    24 885x843        Suspended   Connection to NXHost11 (user5) (Shadowed)
33053   unix-gnome       1DBD1E1131156842D72376675CE33E89 --D--PSA    24 1920x1123      Suspended   Connection to NXHost11 (user5) (Shadowed)
33111   unix-gnome       385B87A23EA908C0B4C6D00806D063B6 --D--PSA    24 871x538        Suspended   Connection to NXHost11 (user5) (Shadowed)
33082   unix-gnome       4D30B996528B752BFB1DE30240659230 --D--PSA    24 871x734        Running     Connection to NXHost11 (user5) (Shadowed)
33057   unix-gnome       57904D3FF28785366D962CDA35CBC6D4 --D--PSA    24 871x555        Running     Connection to NXHost11 (user5) (Shadowed)
33044   unix-gnome       6E338B9EE71D55DE4873ED83FCCB0AD9 --D--PSA    24 871x538        Suspended   Connection to NXHost11 (user5) (Shadowed)
33112   unix-gnome       8B2C9442496D09EFA0B78A13239D4EA0 --D--PSA    24 871x696        Suspended   Connection to NXHost11 (user5) (Shadowed)
33110   unix-gnome       8FD5158542B616E6B9B05B4E2425A6AF --D--PSA    24 871x831        Suspended   Connection to NXHost11 (user5) (Shadowed)
33014   unix-gnome       933CD67071697FBDC63D435E954BC8D6 --D--PSA    24 871x538        Running     Connection to NXHost11 (user5) (Shadowed)
33072   unix-gnome       B07D38F59367CE02ECA445B6EBBF84A1 --D--PSA    24 1138x667       Running     Connection to NXHost11 (user5) (Shadowed)
33000   unix-gnome       B58A633707EEC0C59C8A51EC9D688D3C --D--PSA    24 1920x1123      Running     Connection to NXHost11 (user5) (Shadowed)
33069   unix-gnome       BB78D40014DE5CF2A706536FF76FCFD8 --D--PSA    24 871x802        Suspended   Connection to NXHost11 (user5) (Shadowed)
33108   unix-gnome       C57D24C4AAC14F839E0A8C6B6C83D24E --D--PSA    24 1920x1123      Suspended   Connection to NXHost11 (user5) (Shadowed)
33070   unix-gnome       F90462D7CCEC82D5DDDA1E8C2CCE78E4 --D--PSA    24 1168x909       Suspended   Connection to NXHost11 (user5) (Shadowed)

要删除会话以使用户的客户端不会持续冻结，我们必须手动删除它们/var/lib/nxserver/db/running/- 但格式不一样：

[root@NXHost11 running]# pwd
/var/lib/nxserver/db/running
[root@NXHost11 running]# ls
sessionId{095675CAD6805301A215278C29E186F5}  sessionId{84A166F4F3D0B743357FA37751BDA786}
sessionId{0FA3E7C0B2914C66B8E468BE646D88F7}  sessionId{8B2C9442496D09EFA0B78A13239D4EA0}
sessionId{104750C53E17F5B87A9BFBC1E966B8D7}  sessionId{8CC40155C71AE6E7F73365DAFDCD2349}
sessionId{14B7F108B0A13635B7D697B26427D856}  sessionId{8ECBE26B9D5C10C44192C150FDA80158}
sessionId{15782E405134B2CF3BD09821CC3DC55C}  sessionId{8FADEDAE322A31585EB0DD8A30AB0285}
sessionId{180CA97293F95E625F12894B78FE100B}  sessionId{8FD5158542B616E6B9B05B4E2425A6AF}
sessionId{189E20515FC5624507CAF25C836FB426}  sessionId{92BCB8BA457267750FFE862EEB3C8CE6}
sessionId{18F86BA13166B94D0A80F10E3D3F220F}  sessionId{933CD67071697FBDC63D435E954BC8D6}
sessionId{195E394D40C21178D0ED4E5198B90792}  sessionId{9400C9D9D16CC0D4254DFAC45C9A52C9}
sessionId{1CD93CE30AD76937710823D0FAE15828}  sessionId{95DE940721837DF10BE3FEB1535DC78A}
sessionId{1DBD1E1131156842D72376675CE33E89}  sessionId{9A2A5A849295FC2EC4A9B7E27B53CBF7}
sessionId{1E1B5C326321775CCA05F2752CE17A8B}  sessionId{9D565E61FA3B1D81F9F1A0B185A0EC83}
sessionId{1FE7FD8EC70DC99652F214A3B5E905D1}  sessionId{A5877C91B948DFC24AF86EFB2495E527}
sessionId{22FAD34C0CC63CD959204669D8FDD9F0}  sessionId{A64443BB165B532521741D5D8F19EFAB}
sessionId{272CF217D5E8F56973743F86CAAF94BC}  sessionId{ABDC93271DF58FCE7DA7DBE7500C21B3}
sessionId{27FF7291F20965E10272A39B1FB8E4DC}  sessionId{AF6B1A42DD47C25FD176E60231A90DAD}
sessionId{2E7F640462E924284B079E10CC0E2E23}  sessionId{B07D38F59367CE02ECA445B6EBBF84A1}
sessionId{330CB4473B1AF6C948F2BFB9BDD2BADB}  sessionId{B2D860333DDD3B7FF35EA48BFF9ABD00}
sessionId{385B87A23EA908C0B4C6D00806D063B6}  sessionId{B42E37E4785B42342C4EB009D74B4EA0}
sessionId{389242121CE6E206584C2A45E236ABFF}  sessionId{B58A633707EEC0C59C8A51EC9D688D3C}
sessionId{3C4884BB99ADFF1FA18B039E88A864D1}  sessionId{B6C3CDE47C2371972A7536B854A931F4}
sessionId{3FED31A80C56BA9B038A6A765AED0C38}  sessionId{B779C01B1F1915E571B1639A481E9848}
sessionId{400753DEC565BB0DB52ED904137C463F}  sessionId{BB78D40014DE5CF2A706536FF76FCFD8}
sessionId{421C53FC39AE9D79E60E6055D2FC7DE8}  sessionId{C0740993AD5429567243033DD5451B0F}
sessionId{42F76BBDCE57874C8E3A0109E61BE37B}  sessionId{C0B5C4E91BFFC94A2ED8C399ADD264E4}
sessionId{43DBB2733414428C80DD68FA87D7C5B7}  sessionId{C57D24C4AAC14F839E0A8C6B6C83D24E}
sessionId{46A37999D33B0D66026C48D6D9C7B90A}  sessionId{C605F9961D8C4C6511CE11F375E2DAD2}
sessionId{4D30B996528B752BFB1DE30240659230}  sessionId{CD76B8B7119293B2CA6164D621BCA062}
sessionId{57904D3FF28785366D962CDA35CBC6D4}  sessionId{DAAA94C7D01E099A1D566AF0E44B23E4}
sessionId{58BFD388FBED5D39EED5D03A6BEB83B7}  sessionId{DBAE1C4AD9B0CEB956711384B9A4C503}
sessionId{5DC416CBE36DD68259246F21C4D12C63}  sessionId{DF866B06E27911C90130A4AC7F24E03C}
sessionId{6284D3EE9771A085520C12C5C089CB63}  sessionId{E112F0415D4B2B47D892FA16D83819AE}
sessionId{63F6B34AF4DD407E46CAB8D52EE1B00D}  sessionId{E767F74579682E357BCF9E8635658847}
sessionId{64CD7EC1A6156DFD992DCF6AA0D3D959}  sessionId{EB78959FD59424DAF2C965388A056AE3}
sessionId{6D570D2998E544DD2E2B4F68A9185377}  sessionId{ED560BFC6D38D0946AF3E0A453E8EBC2}
sessionId{6E338B9EE71D55DE4873ED83FCCB0AD9}  sessionId{EE11025659E3D66007357A870FB973AA}
sessionId{70556E711755D613445D72F505F5ACAA}  sessionId{EF819D2926EFF1DA0E0208578D282D28}
sessionId{7706DEA73E98C5997D61CA6BE49D2313}  sessionId{F1141CC7C189F45D4C6E1B5A805BA849}
sessionId{7723BB4A0C5CCE18A67D5D64235357AC}  sessionId{F5E6EC0AB1E015AE187CC30412291A70}
sessionId{787D6CE3EBA641706F3E07DD61159B24}  sessionId{F90462D7CCEC82D5DDDA1E8C2CCE78E4}
sessionId{7BD83901652D8F26B9D4B128D0021344}  sessionId{F904BF11478F62FF368ACAA9978F365B}
sessionId{8100B0CADB1369EB9573E9B986758545}  sessionId{F91EECDB9A7B9298763F3DB439205CFC}

另一个问题是，同一主机上有其他用户正在运行 NoMachine 会话，我无法关闭，或者只需 rm 整个目录的会话就很容易了。

因此，问题是，除了手动删除每个单独的会话 ID: 之外
rm sessionId{pasteletternumbercombinationhere}，是否有一种更简单的方法可以在不影响其他用户会话的情况下完成此操作？看起来 ps 不能显示我可以编写脚本的信息，因为 freenx 的“处理程序”机制取得所有权，并且所有 sessionID 文件都是 nx:nx 而不是用户名。

答案1

我希望我的理解是正确的：您想要删除 sessionID 列为已挂起的所有文件吗？这将是

for SessionID in `sed -n '/Suspended/s/.*unix-gnome *\(\S*\).*/\1/p' /etc/nxserver.log`; do
  rm  /var/lib/nxserver/db/running/sessionId\{$SessionID\}
done

sed 脚本从挂起的会话中提取 sessionId，每个相应的文件都会被删除。

如果这不是您想要的，请澄清您的问题。

答案2

由于您的数据已很好地制成表格，因此快速awk即可完成您的大部分工作：

awk 'NR>2 && $7=="Suspended" {print "sessionID{"$3"}"}' /etc/nxserver.log | xargs rm -f

要查看运行前要删除的文件列表，只需使用：

awk 'NR>2 && $7=="Suspended" {print "sessionID{"$3"}"}' /etc/nxserver.log

答案3

cd "/var/lib/nxserver/db/running" && \
perl -lne '
   @F = unpack "x25A32x31A12";
   unlink "sessionId{$F[0]}" if $F[1] eq "Suspended";
' /etc/nxserver.log

unpack跳过前 25 个字符，然后获取下一个 32 = sessionId，并类似地获取 Status 字段。最后unlink删除该文件。

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