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explain options introduced in examples
[barcat.git]
/
barcat
diff --git
a/barcat
b/barcat
index 9c4741a383efaafac4dc11423aaf0e885fde22a1..b6f60ef2a6b36355c1de63f3d6a96a935fe108ea 100755
(executable)
--- a/
barcat
+++ b/
barcat
@@
-315,15
+315,15
@@
Draw a sine wave:
seq 30 | awk '{print sin($1/10)}' | barcat
seq 30 | awk '{print sin($1/10)}' | barcat
-Compare file sizes:
+Compare file sizes
(with human-readable numbers)
:
- du -d0 -
m * | barcat
+ du -d0 -
b * | barcat -H
-Memory usage of user processes:
+Memory usage of user processes
with long names truncated
:
ps xo %mem,pid,cmd | barcat -l40
ps xo %mem,pid,cmd | barcat -l40
-Monitor network latency:
+Monitor network latency
from prefixed results
:
ping google.com | barcat -f'time=\K' -t
ping google.com | barcat -f'time=\K' -t
@@
-334,14
+334,14
@@
Commonly used after counting, for example users on the current server:
Letter frequencies in text files:
cat /usr/share/games/fortunes/*.u8 |
Letter frequencies in text files:
cat /usr/share/games/fortunes/*.u8 |
- perl -C
O
-nE 'say for grep length, split /\PL*/, uc' |
+ perl -C
S
-nE 'say for grep length, split /\PL*/, uc' |
sort | uniq -c | barcat
Number of HTTP requests per day:
cat log/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat
sort | uniq -c | barcat
Number of HTTP requests per day:
cat log/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat
-Any kind of database query with
leading counts
:
+Any kind of database query with
counts, preserving returned alignment
:
echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
psql -t | barcat -u
echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
psql -t | barcat -u