| 139 | } |
| 140 | |
| 141 | static char *do_shell(int argc, char *argv[]) |
| 142 | { |
| 143 | FILE *p; |
| 144 | char buf[4096]; |
| 145 | char *cmd; |
| 146 | size_t nread; |
| 147 | int i; |
| 148 | |
| 149 | cmd = argv[0]; |
| 150 | |
| 151 | p = popen(cmd, "r"); |
| 152 | if (!p) { |
| 153 | perror(cmd); |
| 154 | exit(1); |
| 155 | } |
| 156 | |
| 157 | nread = fread(buf, 1, sizeof(buf), p); |
| 158 | if (nread == sizeof(buf)) |
| 159 | nread--; |
| 160 | |
| 161 | /* remove trailing new lines */ |
| 162 | while (nread > 0 && buf[nread - 1] == '\n') |
| 163 | nread--; |
| 164 | |
| 165 | buf[nread] = 0; |
| 166 | |
| 167 | /* replace a new line with a space */ |
| 168 | for (i = 0; i < nread; i++) { |
| 169 | if (buf[i] == '\n') |
| 170 | buf[i] = ' '; |
| 171 | } |
| 172 | |
| 173 | if (pclose(p) == -1) { |
| 174 | perror(cmd); |
| 175 | exit(1); |
| 176 | } |
| 177 | |
| 178 | return xstrdup(buf); |
| 179 | } |
| 180 | |
| 181 | static char *do_warning_if(int argc, char *argv[]) |
| 182 | { |