Shell commands sed for file specifies the final location to the key word in the last line of the con-CodePudding

Assumes that the file is the test. TXT file content is as follows:
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1 Start the 2020-01-01 12:20:20
2 Start Job Jobname
3 SSDFFFF
4 SSDDKDDD
5 Start the 2020-01-01 12:20:50
6 Finish Job Jobname
7 Start the 2020-01-01 12:30:10
8 Start Job Jobname
9 FFHKFFJKFF
10 SSHDKHDKDHKD
Start the 2020-01-01 11 12:30:30
12 Finish Job Jobname
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
We need to print bold part
Use the following shell commands can be achieved:
The cat test. TXT | | tac sed - n '1,/Finish Job/p | sed' $d | tac
Note: output to the screen is the role of the cat file content
Is the role of tac content inversion, the content display in reverse,
[root @ udata TMP] # cat test. TXT | tac
12 Finish Job Jobname
Start the 2020-01-01 11 12:30:30
10 SSHDKHDKDHKD
9 FFHKFFJKFF
8 Start Job Jobname
7 Start the 2020-01-01 12:30:10
6 Finish Job Jobname
5 tart 12:20:50 2020-01-01
4 SSDDKDDD
3 SSDFFFF
2 Start Job Jobname
1 Start the 2020-01-01 12:20:20

Sed - n '1,/Finish the Job/p' role is to line 1 and the first case Finish the Job of line displayed
[root @ udata TMP] # cat test. TXT | | tac sed - n '1,/Finish the Job/p'
12 Finish Job Jobname
Start the 2020-01-01 11 12:30:30
10 SSHDKHDKDHKD
9 FFHKFFJKFF
8 Start Job Jobname
7 Start the 2020-01-01 12:30:10
6 Finish Job Jobname
Sed '$d' role is to remove the last line
[root @ udata TMP] # cat test. TXT | | tac sed - n '1,/Finish Job/p | sed' $d '
12 Finish Job Jobname
Start the 2020-01-01 11 12:30:30
10 SSHDKHDKDHKD
9 FFHKFFJKFF
8 Start Job Jobname
7 Start the 2020-01-01 12:30:10
Then use tac inversion content
[root @ udata TMP] # cat test. TXT | | tac sed - n '1,/Finish Job/p | sed' $d | tac
7 Start the 2020-01-01 12:30:10
8 Start Job Jobname
9 FFHKFFJKFF
10 SSHDKHDKDHKD
Start the 2020-01-01 11 12:30:30
12 Finish Job Jobname
Got what we need

CodePudding user response:

How to identify the bold part of