du

2018-04-08 | 阅读：次

前言

du 、df 、sort 常常一起结合使用

正文

df

df -h

<!-- -h, --human-readable  print sizes in human readable format (e.g., 1K 234M 2G) -->

iPhone:/private/var/MobileAsset/Assets root# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/disk0s1s1  3.8G  3.5G  278M  93% /
devfs            52K   52K     0 100% /dev
/dev/disk0s1s2   26G  2.0G   24G   8% /private/var
/dev/disk4      236M   69M  167M  30% /Developer

 这个参数和sort 的-h 参数意义是一样的
 

df -m

iPhone:/var/Keychains root# df -m
Filesystem     1M-blocks  Used Available Use% Mounted on
/dev/disk0s1s1      3644  3397       211  95% /
devfs                  1     1         0 100% /dev
/dev/disk0s1s2     26597  2058     24540   8% /private/var
/dev/disk4           236    69       167  30% /Developer

du

which are the larger caches.

In the terminal run du -s /Library/Caches/* | sort -n

du -sh *

iPhone:~/Library/Caches root# du -sh * |sort -hr
87M	com.apple.coresymbolicationd
46M	com.apple.pipelined
20M	locationd
1.2M	Backup

cleanSqlite

cleanKeychainsSqlite — 简单的方法抽取，更多信息请看see also

//新增/var/Keychains/keychain-2.db
static
void cleanKeychainsSqlite() {
    
    sqlite3 *database;
    
    int openResult = sqlite3_open("/var/Keychains/keychain-2.db", &database);
    if (openResult == SQLITE_OK)
    {
        int execResult = sqlite3_exec(database, "DELETE FROM genp WHERE agrp<>'apple'", NULL, NULL, NULL);
        if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM genp WHERE agrp<>'apple', error %d", execResult);
        
        execResult = sqlite3_exec(database, "DELETE FROM cert WHERE agrp<>'lockdown-identities'", NULL, NULL, NULL);
        if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM cert WHERE agrp<>'lockdown-identities', error %d", execResult);
        
        execResult = sqlite3_exec(database, "DELETE FROM keys WHERE agrp<>'lockdown-identities'", NULL, NULL, NULL);
        if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM keys WHERE agrp<>'lockdown-identities'', error %d", execResult);
        
        execResult = sqlite3_exec(database, "DELETE FROM inet", NULL, NULL, NULL);
        if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM inet, error %d", execResult);
        
        execResult = sqlite3_exec(database, "DELETE FROM sqlite_sequence", NULL, NULL, NULL);
        if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM sqlite_sequence, error %d", execResult);
        
        sqlite3_close(database);
    }
    else{
        NSLog(@"knkniosre: Failed to open /var/Keychains/keychain-2.db, error %d", openResult);
        return;
    }

}

        // Delete cookies,  这些在iOS10 基本用不上
        [fileManager removeItemAtPath:@"/var/mobile/Library/Cookies/Cookies.binarycookies" error:nil];
        [fileManager removeItemAtPath:@"/private/var/root/Library/Cookies/Cookies.binarycookies" error:nil];
        [fileManager removeItemAtPath:@"/var/mobile/Library/Safari/History.plist" error:nil];
        [fileManager removeItemAtPath:@"/var/mobile/Library/Safari/SuspendState.plist" error:nil];

<!-- iPhone:/var/Keychains root# du -sh * |sort -hr -->
25M	keychain-2.db

        sqlite3 *database;
        int openResult = sqlite3_open("/var/Keychains/keychain-2.db", &database);
        if (openResult == SQLITE_OK)
        {
                int execResult = sqlite3_exec(database, "DELETE FROM genp WHERE agrp<>'apple'", NULL, NULL, NULL);
                if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM genp WHERE agrp<>'apple', error %d", execResult);

                execResult = sqlite3_exec(database, "DELETE FROM cert WHERE agrp<>'lockdown-identities'", NULL, NULL, NULL);
                if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM cert WHERE agrp<>'lockdown-identities', error %d", execResult);

                execResult = sqlite3_exec(database, "DELETE FROM keys WHERE agrp<>'lockdown-identities'", NULL, NULL, NULL);
                if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM keys WHERE agrp<>'lockdown-identities'', error %d", execResult);

                execResult = sqlite3_exec(database, "DELETE FROM inet", NULL, NULL, NULL);
                if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM inet, error %d", execResult);

                execResult = sqlite3_exec(database, "DELETE FROM sqlite_sequence", NULL, NULL, NULL);
                if (execResult != SQLITE_OK) NSLog(@"kniosre: Failed to exec DELETE FROM sqlite_sequence, error %d", execResult);

                sqlite3_close(database);
        }
        else NSLog(@"kniosre: Failed to open /var/Keychains/keychain-2.db, error %d", openResult);