[ZBX-12662] Preprocessing with regex issue Created: 2017 Sep 02 Updated: 2017 Sep 02 Resolved: 2017 Sep 02 |
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| Status: | Closed |
| Project: | ZABBIX BUGS AND ISSUES |
| Component/s: | Frontend (F) |
| Affects Version/s: | 3.4.1 |
| Fix Version/s: | None |
| Type: | Incident report | Priority: | Minor |
| Reporter: | Vitaly Zhuravlev | Assignee: | Unassigned |
| Resolution: | Cannot Reproduce | Votes: | 0 |
| Labels: | preprocessing, regexps | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Description |
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Hello, i'm trying to parse the following 'table' with regex: smartctl 6.4 2015-06-04 r4109 [i686-w64-mingw32-win7(64)-sp1] (sf-6.4-1) Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org === START OF READ SMART DATA SECTION === SMART Attributes Data Structure revision number: 1 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 6357 12 Power_Cycle_Count 0x0032 097 097 000 Old_age Always - 2337 177 Wear_Leveling_Count 0x0013 096 096 000 Pre-fail Always - 69 179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0 181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age Always - 0 182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age Always - 0 183 Runtime_Bad_Block 0x0013 100 100 010 Pre-fail Always - 0 187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0032 065 051 000 Old_age Always - 35 195 ECC_Error_Rate 0x001a 200 200 000 Old_age Always - 0 199 CRC_Error_Count 0x003e 099 099 000 Old_age Always - 11 235 POR_Recovery_Count 0x0012 099 099 000 Old_age Always - 86 241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 28271920601 I need to grab raw value of Reallocated sectors count: 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 In dependent item I tried to use the following regex: 5 Reallocated.+\s([0-9]+), \1 But that returned the following string(the first value on the NEXT line actually): 9 I then switched to 5 Reallocated.+ ([0-9]+), \1 And that worked and returned me '0' Could it be that it is because \s doesn't match space and only newline chars? For example, online tool https://regex101.com/ returns 0 for both regexes. Correct if I'm wrong |
| Comments |
| Comment by Vladislavs Sokurenko [ 2017 Sep 02 ] |
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have you tried grep -E on the file ? can you please attach this file. For example if it's 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 6357 Then regex101 also match 9 because \s equals [\r\n\t\f\v ] so it matches everything until last white space, in this case new line is last and then takes the number after new line, but if you have 2 new lines then it does not match, but are those 2 lines some extra formatting inserted by some kind of editor when you copied from a file ? |
| Comment by Glebs Ivanovskis (Inactive) [ 2017 Sep 02 ] |
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Dear vzhuravlev, maybe that's because you had literal space in the end of your first regexp? |
| Comment by Vitaly Zhuravlev [ 2017 Sep 02 ] |
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glebs.ivanovskis, it was Jira typo, fixed in description. |
| Comment by Vitaly Zhuravlev [ 2017 Sep 02 ] |
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Thanks, vso, I guess it's \r\n thing! |