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? pv ../root.tar.gz |tar -zxf -
? 参考：https://blog.csdn.net/weixin_33711641/article/details/94330472?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2allfirst_rank_v2~rank_v25-8-94330472.nonecase&utm_term=tar%E8%A7%A3%E5%8E%8B%E7%9C%8B%E8%BF%9B%E5%BA%A6
#!/bin/bash
#total_size=`xz --robot -l $1 | grep 'totals' | awk '{print $5}'`
total_size=`gzip -l $1 |awk 'END{print $2}'`
echo "total_size:$total_size"
block_size=`expr $total_size / 51200`
block_size=`expr $block_size + 1`
#let block_size=total_size/51200
#let block_size=block_size+1
echo "block_size:$block_size"
tar --blocking-factor=$block_size --checkpoint=1 --checkpoint-action='ttyout= %u \r' -zxf $1 -C $2
#显示效果：
root@lalala:~# ./unpackage.sh ./root.tar.gz temp/
total_size:471726080
block_size:921
unpack 54%
参考 ： https://blog.csdn.net/u012385733/article/details/88840126
参考：http://www.gnu.org/software/tar/manual/html_section/tar_26.html
#解压脚本
#!/bin/bash
total_size=`gzip -l $1 |awk 'END{print $2}'`
#echo "total_size:$total_size"
block_size=`expr $total_size / 512`
block_size=`expr $block_size / $3`
block_size=`expr $block_size + 1`
#let block_size=total_size/51200
#let block_size=block_size+1
#echo "block_size:$block_size"
tar --blocking-factor=$block_size --checkpoint=1 --checkpoint-action='echo=%u' -zxf $1 -C $2 2>&1
//Qt获取tar解压进度
//伪代码 简单改改就好
get_tar_progress_block("/bin/bash",QStringList()<<"-c"<<"/usr/nova/bin/unpackage.sh /advanced/root.tar.gz / 100", &pval, 100);
//pval 为进度条进度值，100为压缩进度多少等分
int xxx::get_tar_progress_block(QString cmd,QStringList opt, int *pval, int portions){
QProcess *proc = new QProcess;
QByteArray result_tmp;
QString result;
int cmdEnd = 0;
int temp = 0;
proc->start(cmd,opt);
if (!proc->waitForStarted()){
return -1;
}
while(!cmdEnd){
if( proc->waitForReadyRead() ){
result_tmp.append(proc->readAll());
result = result_tmp;
if(result == "100")
cmdEnd = 1;
if(result.right(1) == "\n"){
QRegularExpression rx("(\\d+)");
QRegularExpressionMatchIterator i = rx.globalMatch(result);
while (i.hasNext()) {
QRegularExpressionMatch match = i.next();
QString word = match.captured(1);
temp = word.toInt();
emit emit_progressbar_val(SYSINIT_PROGRESSBAR_ID,(*pval+temp));//给进度条进度值
if(temp == portions){
cmdEnd = 1;
*pval += temp;
}
}
result_tmp.clear();
result.clear();
}
}
if (!proc->waitForFinished()){
return -1;
}
return 0;
}
