diff options
| -rw-r--r-- | toys/net/netcat.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/toys/net/netcat.c b/toys/net/netcat.c index e8bee37a..62586054 100644 --- a/toys/net/netcat.c +++ b/toys/net/netcat.c @@ -7,13 +7,13 @@ * netcat -L zombies USE_NETCAT(OLDTOY(nc, netcat, TOYFLAG_USR|TOYFLAG_BIN)) -USE_NETCAT(NEWTOY(netcat, USE_NETCAT_LISTEN("^tlL")"w#<1W#<1p#<1>65535q#<1s:f:46uU"USE_NETCAT_LISTEN("[!tlL][!Lw]")"[!46U]", TOYFLAG_BIN)) +USE_NETCAT(NEWTOY(netcat, USE_NETCAT_LISTEN("^tElL")"w#<1W#<1p#<1>65535q#<1s:f:46uU"USE_NETCAT_LISTEN("[!tlL][!Lw]")"[!46U]", TOYFLAG_BIN)) config NETCAT bool "netcat" default y help - usage: netcat [-46U] [-u] [-wpq #] [-s addr] {IPADDR PORTNUM|-f FILENAME} + usage: netcat [-46U] [-u] [-wpq #] [-s addr] {IPADDR PORTNUM|-f FILENAME|COMMAND...} Forward stdin/stdout to a file or network connection. @@ -36,19 +36,20 @@ config NETCAT_LISTEN default y depends on NETCAT help - usage: netcat [-t] [-lL COMMAND...] + usage: netcat [-tElL] - -l Listen for one incoming connection - -L Listen for multiple incoming connections (server mode) - -t Allocate tty (must come before -l or -L) + -l Listen for one incoming connection, then exit + -L Listen and background each incoming connection (server mode) + -t Allocate tty + -E Forward stderr - The command line after -l or -L is executed (as a child process) to handle - each incoming connection. If blank -l waits for a connection and forwards - it to stdin/stdout. If no -p specified, -l prints port it bound to and + When listening the COMMAND line is executed as a child process to handle + an incoming connection. With no COMMAND -l forwards the connection + to stdin/stdout. If no -p specified, -l prints the port it bound to and backgrounds itself (returning immediately). For a quick-and-dirty server, try something like: - netcat -s 127.0.0.1 -p 1234 -tL /bin/bash -l + netcat -s 127.0.0.1 -p 1234 -tL sh -l */ #define FOR_netcat @@ -181,7 +182,7 @@ void netcat_main(void) } dup2(in1, 0); dup2(in1, 1); - if (FLAG(L)) dup2(in1, 2); + if (FLAG(E)) dup2(in1, 2); if (in1>2) close(in1); xexec(toys.optargs); } |