<\/p>\n\n\n\n
$ls\nascii-table avg.txt case-changer.c exist.sh mph-to-kph.c\nascii-table.c avg-with-garbage.txt env-var.c functions_ver1.c mph-to-kph_v2.c\nascii-table.md case-changer env-var-set.c functions_ver2.c output.c\n$cat env-var.c \n#include <stdio.h>\n#include <stdlib.h>\n#include <string.h>\n\nint main(void)\n{\n \/* Using getenv() to fetch env. variables *\/\n printf(\"Your username is %s\\n\", getenv(\"USER\"));\n printf(\"Your home directory is %s\\n\", \n getenv(\"HOME\"));\n printf(\"Your preferred editor is %s\\n\", \n getenv(\"EDITOR\"));\n printf(\"Your shell is %s\\n\", getenv(\"SHELL\"));\n\n \/* Check if the current terminal support colors*\/\n if ( strstr(getenv(\"TERM\"), \"256color\") )\n {\n \/* Color the output with \\033 + colorcode *\/\n printf(\"\\033[0;31mYour \\033[0;32mterminal \"\n \"\\033[0;35msupport \"\n \"\\033[0;33mcolors\\033[0m\\n\");\n }\n else\n {\n printf(\"Your terminal doesn't support\" \n \" colors\\n\");\n }\n return 0;\n}\n$gcc env-var.c -o env-var.c \ngcc: fatal error: input file \u2018env-var.c\u2019 is the same as output file\ncompilation terminated.\n$gcc env-var.c -o env-var\n$.\/env-var \nYour username is jeffrin\nYour home directory is \/home\/jeffrin\nYour preferred editor is (null)\nYour shell is \/bin\/bash\nYour terminal support colors\n$\n<\/pre>\n","protected":false},"excerpt":{"rendered":"$ls ascii-table avg.txt case-changer.c exist.sh mph-to-kph.c ascii-table.c avg-with-garbage.txt env-var.c functions_ver1.c mph-to-kph_v2.c ascii-table.md case-changer env-var-set.c functions_ver2.c output.c $cat env-var.c #include <stdio.h> #include <stdlib.h> #include <string.h> int main(void) { \/* Using getenv() to fetch env. variables *\/ printf(“Your username is %s\\n”, getenv(“USER”)); printf(“Your home directory is %s\\n”, getenv(“HOME”)); printf(“Your preferred editor is %s\\n”, getenv(“EDITOR”)); printf(“Your shell is … <\/p>\n