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redis-cli --help redis-cli 4.0.9 Usage: redis-cli [OPTIONS] [cmd [arg [arg ...]]] -h <hostname> Server hostname (default: 127.0.0.1). -p <port> Server port (default: 6379). -s <socket> Server socket (overrides hostname and port). -a <password> Password to use when connecting to the server. -u <uri> Server URI. -r <repeat> Execute specified command N times. -i <interval> When -r is used, waits <interval> seconds per command. It is possible to specify sub-second times like -i 0.1. -n <db> Database number. -x Read last argument from STDIN. -d <delimiter> Multi-bulk delimiter in for raw formatting (default: \n). -c Enable cluster mode (follow -ASK and -MOVED redirections). --raw Use raw formatting for replies (default when STDOUT is not a tty). --no-raw Force formatted output even when STDOUT is not a tty. --csv Output in CSV format. --stat Print rolling stats about server: mem, clients, ... --latency Enter a special mode continuously sampling latency. If you use this mode in an interactive session it runs forever displaying real-time stats. Otherwise if --raw or --csv is specified, or if you redirect the output to a non TTY, it samples the latency for 1 second (you can use -i to change the interval), then produces a single output and exits. --latency-history Like --latency but tracking latency changes over time. Default time interval is 15 sec. Change it using -i. --latency-dist Shows latency as a spectrum, requires xterm 256 colors. Default time interval is 1 sec. Change it using -i. --lru-test <keys> Simulate a cache workload with an 80-20 distribution. --slave Simulate a slave showing commands received from the master. --rdb <filename> Transfer an RDB dump from remote server to local file. --pipe Transfer raw Redis protocol from stdin to server. --pipe-timeout <n> In --pipe mode, abort with error if after sending all data. no reply is received within <n> seconds. Default timeout: 30. Use 0 to wait forever. --bigkeys Sample Redis keys looking for big keys. --hotkeys Sample Redis keys looking for hot keys. only works when maxmemory-policy is *lfu. --scan List all keys using the SCAN command. --pattern <pat> Useful with --scan to specify a SCAN pattern. --intrinsic-latency <sec> Run a test to measure intrinsic system latency. The test will run for the specified amount of seconds. --eval <file> Send an EVAL command using the Lua script at <file>. --ldb Used with --eval enable the Redis Lua debugger. --ldb-sync-mode Like --ldb but uses the synchronous Lua debugger, in this mode the server is blocked and script changes are are not rolled back from the server memory. --help Output this help and exit. --version Output version and exit. Examples: cat /etc/passwd | redis-cli -x set mypasswd redis-cli get mypasswd redis-cli -r 100 lpush mylist x redis-cli -r 100 -i 1 info | grep used_memory_human: redis-cli --eval myscript.lua key1 key2 , arg1 arg2 arg3 redis-cli --scan --pattern '*:12345*' (Note: when using --eval the comma separates KEYS[] from ARGV[] items) When no command is given, redis-cli starts in interactive mode. Type "help" in interactive mode for information on available commands and settings.
http://doc.redisfans.com/key/keys.html
KEYS pattern 查找所有符合给定模式 pattern 的 key 。 KEYS * 匹配数据库中所有 key 。 KEYS h?llo 匹配 hello , hallo 和 hxllo 等。 KEYS h*llo 匹配 hllo 和 heeeeello 等。 KEYS h[ae]llo 匹配 hello 和 hallo ,但不匹配 hillo 。 特殊符号用 \ 隔开 KEYS 的速度非常快,但在一个大的数据库中使用它仍然可能造成性能问题,如果你需要从一个数据集中查找特定的 key ,你最好还是用 Redis 的集合结构(set)来代替。 可用版本:>= 1.0.0时间复杂度:O(N), N 为数据库中 key 的数量。返回值:符合给定模式的 key 列表。 redis> MSET one 1 two 2 three 3 four 4 # 一次设置 4 个 key OK redis> KEYS *o* 1) "four" 2) "two" 3) "one" redis> KEYS t?? 1) "two" redis> KEYS t[w]* 1) "two" redis> KEYS * # 匹配数据库内所有 key 1) "four" 2) "three" 3) "two" 4) "one"
redis-cli -r keys * | wc -l
redis-cli -r keys h*llo | wc -l
redis-cli --scan --pattern '*:12345*' | wc -l
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