Shell script to automate go lang pkg test coverage

#!/bin/sh PACKAGE=mypkg # set mode go test -coverprofile=coverage.out $PACKAGE go tool cover -func=coverage.out go tool cover -html=coverage.out # count mode go test -covermode=count -coverprofile=count.out $PACKAGE go tool cover -func=count.out go tool cover -html=count.out # more info: http://blog.golang.org/cover

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go-lang (3) testing (2)

go log function

func log(s ...interface{}) { f, err := os.OpenFile("info.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666) if err != nil { fmt.Printf("error opening log file: %v", err) os.Exit(1) } defer f.Close() log.SetOutput(f) ss := "" for _, p := range s { switch p.(type) { case bool: ss += fmt.Sprintf("%t ", p.(bool)) case int: ss += fmt.Sprintf("%d ", p.(int)) case float64: ss += fmt.Sprintf("%.2f ", p.(float64)) case string: ss += fmt.Sprintf("%s ", p.(string)) } } log.Println(ss) }

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go-lang (3)

How to filter out Bash arguments

Ever want to know how to drop an argument (and value), --dir in this case, from a Bash script? Someone from my local LUG asked how to do it and this is what I came up with: Fun ;) #!/usr/bin/env bash args=("$@") myargs=() nextarg=-1 for ((i=0; i<$#; i++)) { if [ $nextarg == $i ]; then continue; fi case ${args[$i]} in --dir) nextarg=$((i+1)) ;; *) myargs+="${args[$i]} " esac } echo $myargs ./remove_dir.bash --dir foo --bar baz --bar baz

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bash (3)

MongoDB Data Durability

It doesn't seem you can lose data even when you might otherwise expect to ;) I setup a small replica set using mongod --fork --logpath a.log --smallfiles --oplogSize 50 --port 27001 --dbpath data/z1 --replSet z mongod --fork --logpath b.log --smallfiles --oplogSize 50 --port 27002 --dbpath data/z2 --replSet z mongod --fork --logpath c.log --smallfiles --oplogSize 50 --port 27003 --dbpath data/z3 --replSet z And initalized it: > rs.initiate( { _id:'z', members:[ { _id:1, host:'localhost:27001' }, { _id:2, host:'localhost:27002' }, { _id:3, host:'localhost:27003' } ] } ); Then I killed all three processes: kill -9 25542 25496 25483 Next I brought one of them back up mongod --fork --logpath c.log --smallfiles --oplogSize 50 --port 27003 --dbpath data/z3 and inserted a doc > db.foo.insert({a:1}) Then I killed that process kill -9 25885 and brought the replica set back online using mongod --for

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mongodb (1)

My bashrc file

alias ls='ls -ah --color=always' alias ll='ls -lavh --color=always' alias cp='cp -i' alias vi='/usr/bin/emacs' alias ..='cd ..' alias ...='cd ../..'

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bash (3)

PostgreSQL Sequence Updates

I had a problem with PostgreSQL pgdump recently. My setval() calls were all set to '1'. I whipped up this quick script to fix things: #!/usr/bin/env python DB_NAME = 'my_db' from subprocess import Popen, PIPE import re exclude = [ 'tablename', 'rows' ] tp = re.compile( '[^a-z_]' ) ts = Popen( [ "/usr/bin/psql", DB_NAME, "-c SELECT tablename FROM pg_tables WHERE tablename NOT LIKE 'pg_%' AND tablename NOT LIKE 'sql_%' ORDER BY tablename" ], stdout=PIPE ).communicate()[ 0 ].split( ' ' ) tables = [] for t in ts: t = tp.sub( '', t ) if len( t ) == 0 or t in exclude: continue tables.append( t ) for t in tables: sql = "SELECT pg_catalog.setval( pg_get_serial_sequence( '%s', 'id' ), ( SELECT MAX( id ) FROM %s ) + 1 );" % ( t, t ) print Popen( [ "/usr/bin/psql", DB_NAME, "-c %s" % sql ], stdout=PIPE ).communicate()[ 0 ]

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postgresql (3) python (2)

Mutt Configuration

# basic .muttrc for use with Gmail # Change the following six lines to match your Gmail account details set imap_user = "username@gmail.com" set imap_pass = "" set smtp_url = "smtp://username@smtp.gmail.com:587/" set smtp_pass = "" set from = "username@gmail.com" set realname = "Firstname Lastname" # # # Change the following line to a different editor you prefer. set editor = 'vim + -c "set textwidth=72" -c "set wrap"'

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mutt (1) gmail (1)