a script for emerging world

[ts]

emerge -e world 或 emerge -aDuv world 经常由于编译失败而中途终止，很是浪费时间。于是，最近写了这个脚本来解决这个问题，尤其是当我 emerge -e world 时，节约时间可以以“天”为单位， 。这里贴出来，希望对您有所帮助。


首先生成该脚本：

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nano -w /usr/local/bin/k4worldmerge

内容如下，简单进行拷贝和粘贴即可：

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#!/bin/bash

## /usr/local/bin/k4worldmerge
## writen by ts in April. 2006
## Report bugs to tearstone@gmail.com

source /sbin/functions.sh

## help info
case "$1" in
    "-h" | "--help" | "h" | "-?" | "?" )
        echo ""
        einfo 'A script for emerging world smoothly, and'
	einfo 'lists of emerge, such as failed packages.'
	echo
	ewarn 'Usage:'
        einfo 'emerge -e world || k4worldmerge'
        einfo 'emerge -Duv world || k4worldmerge'
        echo "" &&
                  exit;;
esac

## check user ID
[ "$UID" -ne "0" ] && eerror "Must be root to run this script." && exit

## check whether emerge fails for error, if true, resume it 
while [[ $(tail /var/log/emerge.log |grep \>\>\> |awk '{print $6}'| \
               sed /[[:alpha:]]/d |sed s/\)// |sed '/^$/d'|sed '$!d') -gt \
                 $(tail /var/log/emerge.log |grep \>\>\> |awk '{print $4}'| \
                     sed /[[:alpha:]]/d |sed s/\(// |sed '/^$/d' |sed '$!d') ]]
do
	[[ ! $( ps aux |grep root| sed /watch/d |sed /grep/d | sed /tail/d |grep emerge ) ]] && \
	echo "emerge is failed! Now, resume it and skipfirst." && \
	emerge  --resume --skipfirst 2>/dev/null

	sleep 5
done

echo 

## parameter for tail to retrieve info of lastest emerged world
logNum4lastWorld=$(awk '/world/{print NR}' /var/log/emerge.log |sed '$!d')
logTotal=$(sed -n '$=' /var/log/emerge.log)
(( n = $logTotal - $logNum4lastWorld ))

## information
echo
einfo get info from \"tail -n\ $n /var/log/emerge.log\"echo
echo
ewarn 'generate lists for emerge -e or -Duv world' 
echo
einfo emerged "  "list: /tmp/failedpkgs/emerged.pkg 
einfo completed list: /tmp/failedpkgs/completed.pkg 
einfo failed "   "list: /tmp/failedpkgs/failed.pkg
echo

## make dir for lists
[[ ! -d /tmp/failedpkgs ]] && mkdir -p /tmp/failedpkgs 

## rm old /tmp/failedpkgs/*.pkg file 
[[ -e /tmp/failedpkgs/emerged.pkg ]] && rm /tmp/failedpkgs/*.pkg 2>/dev/null

## get list for all emerged packages
[[ $(tail /var/log/emerge.log | grep \>\>\> |sed '/(1 of 1)/d'| \
      awk '{print $6}'|sed /[[:alpha:]]/d|sed s/\)//|sed '/^$/d'|sed '$!d') -gt \
         $(tail /var/log/emerge.log | grep \>\>\> |sed '/(1 of 1)/d'|awk '{print $4}'| \
              sed /[[:alpha:]]/d|sed s/\(//|sed '/^$/d'|sed '$!d') ]] && \
tail -n "$n" /var/log/emerge.log | \
	grep \>\>\> |grep emerge| awk '{print $4 " " $5 " " $6 "\t" $7}'|sed '$d' |awk '!($0 in a) {a[$0];print}' \
	>> /tmp/failedpkgs/emerged.pkg || \
tail -n "$n" /var/log/emerge.log | \
        grep \>\>\> |grep emerge| awk '{print $4 " " $5 " " $6 "\t" $7}'|awk '!($0 in a) {a[$0];print}' \
        >> /tmp/failedpkgs/emerged.pkg

## get list for completed packages
tail -n "$n" /var/log/emerge.log | \
	grep \:\:\: |grep emerge| awk '{print $5 " " $6 " " $7 "\t" $8}' | awk '!($0 in a) {a[$0];print}' \
	>> /tmp/failedpkgs/completed.pkg

## build list for failed packages
while read pkgNum to pkgTotal pkgname
	do 
	[[ ! $(grep $pkgname /tmp/failedpkgs/completed.pkg) ]] &&  \
       echo $pkgname >> /tmp/failedpkgs/failed.pkg
done < /tmp/failedpkgs/emerged.pkg

chmod 666 /tmp/failedpkgs/*

## print out fail info
[[ ! -e  /tmp/failedpkgs/failed.pkg ]] || [[ ! $(cat /tmp/failedpkgs/failed.pkg) ]] && \
	einfo no failed packages

[[ -e  /tmp/failedpkgs/failed.pkg ]]  && [[ $(cat /tmp/failedpkgs/failed.pkg) ]] && \
	eerror failed packages && \
	for i in $(cat /tmp/failedpkgs/failed.pkg); \
		do grep $i /tmp/failedpkgs/emerged.pkg |awk '!($0 in a) {a[$0];print}'; \
	done 

echo

让脚本可运行：

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 chmod +x /usr/local/bin/k4worldmerge

脚本用法：

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/usr/local/bin/k4worldmerge --help

Good luck!

[Hauser]

看看hielvc的emwrap.sh：http://forums.gentoo.org/viewtopic.php?t=282474

[ts]

我大致看过，没耐心，所以就写个简单的，满足自己的要求就可以了。

看看hielvc的emwrap.sh：http://forums.gentoo.org/viewtopic.php?t=282474

[kohno]

hielvc的emwrap.sh确实不错，emerge -e world某些包编译失败照样继续，完成之后给你一张列表慢慢处理编译失败的包。emerge --resume一般只能用一次，但emwrap.sh打断多次都可以resume。

[ts]

不好意思，去纽约开会回来，所以这么晚才回贴。

hielvc的emwrap.sh， 还有那个 tcupdate 及 maguire 的 emwrap，我都大致读过源码，如果说简洁，maguire 的 emwrap 更清爽些。我没用这些脚本，只是觉得功能有些冗余，而且我为自己写过些另外的脚本（主要是为了偷懒），所以就些功能补充了一个简单的。这个脚本的主要用途有二，一是 resume emerge; 二是查看编译失败的软件包，并留下日记以便它用。

hielvc的emwrap.sh确实不错，emerge -e world某些包编译失败照样继续，完成之后给你一张列表慢慢处理编译失败的包。emerge --resume一般只能用一次，但emwrap.sh打断多次都可以resume。