left               37 user/sh.c        struct cmd *left;
left               43 user/sh.c        struct cmd *left;
left               96 user/sh.c            runcmd(lcmd->left);
left              110 user/sh.c            runcmd(pcmd->left);
left              229 user/sh.c      pipecmd(struct cmd *left, struct cmd *right)
left              236 user/sh.c        cmd->left = left;
left              242 user/sh.c      listcmd(struct cmd *left, struct cmd *right)
left              249 user/sh.c        cmd->left = left;
left              483 user/sh.c          nulterminate(pcmd->left);
left              489 user/sh.c          nulterminate(lcmd->left);