Isolate portion of line from log file, then print to screen
0
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
asked 15 hours ago
GreNIX GreNIX
577
add a comment |
0
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
asked 15 hours ago
GreNIX GreNIX
577
from a file, or from a command? Just that textdataset record count (etc)or only the matching (entire) lines?
– Jeff Schaller
15 hours ago
Just that portion of the log file line. Not the entire line itself
– GreNIX
15 hours ago
Are you using an Operating System whose grep supports the-oflag? (GNU/Linux systems, mainly)
– Jeff Schaller
15 hours ago
Rhel 7. I've attempted using-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.
– GreNIX
15 hours ago
Sorry, -o man page isn't confusing; -w is.
– GreNIX
15 hours ago
add a comment |
0
0
0
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
asked 15 hours ago
GreNIX GreNIX
577
If I have a file that updates a record count every 5 minutes, the output looks something like this:
timestamp name of log file dataset record count 8600
timestamp name of log file dataset record count 8610
How can I effectively isolate dataset record count XXXX and print just that string to screen?
grep
grep
asked 15 hours ago
GreNIX GreNIX
577
asked 15 hours ago
GreNIX GreNIX
577
asked 15 hours ago
GreNIX GreNIX
577
asked 15 hours ago
GreNIX GreNIX
577
asked 15 hours ago
GreNIX GreNIX
577
577
from a file, or from a command? Just that textdataset record count (etc)or only the matching (entire) lines?
– Jeff Schaller
15 hours ago
Just that portion of the log file line. Not the entire line itself
– GreNIX
15 hours ago
Are you using an Operating System whose grep supports the-oflag? (GNU/Linux systems, mainly)
– Jeff Schaller
15 hours ago
Rhel 7. I've attempted using-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.
– GreNIX
15 hours ago
Sorry, -o man page isn't confusing; -w is.
– GreNIX
15 hours ago
add a comment |
from a file, or from a command? Just that textdataset record count (etc)or only the matching (entire) lines?
– Jeff Schaller
15 hours ago
Just that portion of the log file line. Not the entire line itself
– GreNIX
15 hours ago
Are you using an Operating System whose grep supports the-oflag? (GNU/Linux systems, mainly)
– Jeff Schaller
15 hours ago
Rhel 7. I've attempted using-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.
– GreNIX
15 hours ago
Sorry, -o man page isn't confusing; -w is.
– GreNIX
15 hours ago
from a file, or from a command? Just that text
dataset record count (etc) or only the matching (entire) lines?– Jeff Schaller
15 hours ago
from a file, or from a command? Just that text
dataset record count (etc) or only the matching (entire) lines?– Jeff Schaller
15 hours ago
Just that portion of the log file line. Not the entire line itself
– GreNIX
15 hours ago
Just that portion of the log file line. Not the entire line itself
– GreNIX
15 hours ago
Are you using an Operating System whose grep supports the
-o flag? (GNU/Linux systems, mainly)– Jeff Schaller
15 hours ago
Are you using an Operating System whose grep supports the
-o flag? (GNU/Linux systems, mainly)– Jeff Schaller
15 hours ago
Rhel 7. I've attempted using
-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.– GreNIX
15 hours ago
Rhel 7. I've attempted using
-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.– GreNIX
15 hours ago
Sorry, -o man page isn't confusing; -w is.
– GreNIX
15 hours ago
Sorry, -o man page isn't confusing; -w is.
– GreNIX
15 hours ago
add a comment |
1 Answer
1
active
oldest
votes
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }'
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }'
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
add a comment |
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }'
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
add a comment |
2
2
2
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }'
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
One way, with awk:
awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }' input
or piped via:
command | awk 'match($0, "dataset record count [[:digit:]]+") { print substr($0, RSTART, RLENGTH) }'
Or with a grep that accepts -o:
grep -Eo 'dataset record count [[:digit:]]+' input
or piped:
command | grep -Eo 'dataset record count [[:digit:]]+'
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
answered 15 hours ago
Jeff SchallerJeff Schaller
39.5k1054126
39.5k1054126
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
add a comment |
I've triedgrep -Eo 'dataset [a-z A-Z 0-9]'but I'm not sure why it isn't working.
– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
I've tried
grep -Eo 'dataset [a-z A-Z 0-9]' but I'm not sure why it isn't working.– GreNIX
14 hours ago
I've tried
grep -Eo 'dataset [a-z A-Z 0-9]' but I'm not sure why it isn't working.– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
I needed to add the + to the end of the bracket
– GreNIX
14 hours ago
add a comment |
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from a file, or from a command? Just that text
dataset record count (etc)or only the matching (entire) lines?– Jeff Schaller
15 hours ago
Just that portion of the log file line. Not the entire line itself
– GreNIX
15 hours ago
Are you using an Operating System whose grep supports the
-oflag? (GNU/Linux systems, mainly)– Jeff Schaller
15 hours ago
Rhel 7. I've attempted using
-o, but admittedly I'm confused by the man page entry for it and may not be using it properly. Seems a bit convoluted to me.– GreNIX
15 hours ago
Sorry, -o man page isn't confusing; -w is.
– GreNIX
15 hours ago