Tail a file for specific text

tail

Is there a Linux command similar to tail where instead of specifying a number of lines you can specify a string of text, the file would be searched for that text from the last line to the first and then display all or a specified number lines after that? The content at the end of the log I'm trying to capture can vary between 0 and 10 lines so when it isn't 10 it makes the log file that I copy it to hard to understand.

From the tail man page I'm only seeing the ability to specify either lines or bytes.

Best Answer

specify a string of text and then display all lines after that

Here's some fake data to play with:

$ seq 100 > input

...and here I'm searching for the string "90" and displaying everything after it (until the $ end of the file):

$ sed -n '/90/,$p' input
90
91
92
93
94
95
96
97
98
99
100

If you want a more flexible solution, use a variable, change the sed quotes (and escape the $ from the shell, for sed):

$ t=96
$ sed -n "/$t/,\$p" input
# or
$ sed -n /$t/,\$p input
96
97
98
99
100
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