pschdir(1)

Makefile

@@ -57,6 +57,10 @@ dist/grammy.tmp/weather.com.png: dist/grammy.tmp
 dist/ifpublic:
 	cp ifpublic/ifpublic dist/
 
+dist/pschdir:
+	$(MAKE) -C pschdir
+	cp pschdir/pschdir dist/pschdir
+
 dist/spacer.bin:
 	# creates an 8GB empty file
 	# that way when the alarm bells go off you can delete it to save a
@@ -97,6 +101,14 @@ $(PREFIX)/bin/bspwm:
 	git clone https://github.com/baskerville/bspwm.git $(PREFIX)/src/bspwm
 	$(MAKE) -C $(PREFIX)/src/bspwm install
 
+# Installs the Python script without documentation because I'm lazy and don't
+# wanna run the upstream Makefile and then deal with filtering out the Python
+# stuff (which is specific to 3.6 which is a little outdated).
+# depends on apk:git apk:python
+$(PREFIX)/bin/git-filter-repo:
+	git clone https://github.com/newren/git-filter-repo.git $(PREFIX)/src/git-filter-repo
+	$(INSTALL) -Dm0755 $(PREFIX)/src/git-filter-repo/git-filter-repo $(PREFIX)/bin/git-filter-repo
+
 # nmap 7.80 is the last Free nmap release
 # depends on apk:linux-headers
 # had to # ln -s /bin/gmake /usr/local/bin/make
@@ -134,6 +146,14 @@ $(PREFIX)/bin/scrot:
 	sh -c 'cd $(PREFIX)/src/scrot && ./autogen.sh && ./configure MAKE=$(MAKE) PREFIX=$(PREFIX)'
 	$(MAKE) -C $(PREFIX)/src/scrot install
 
+# depends on
+#	apk:sudo
+$(PREFIX)/src/wiringpi:
+	git clone https://github.com/WiringPi/WiringPi.git $(PREFIX)/src/wiringpi
+	git -C $(PREFIX)/src/wiringpi checkout final_official_2.50
+	sed -i .tmp -e /^sudo/d $(PREFIX)/src/wiringpi/build
+	sh -c 'cd $(PREFIX)/src/wiringpi; sudo=sudo ./build'
+
 $(PREFIX)/bin/xdo:
 	git clone https://github.com/baskerville/xdo.git $(PREFIX)/src/xdo
 	$(MAKE) -C $(PREFIX)/src/xdo install

pschdir/Makefile

@@ -0,0 +1,2 @@
+pschdir: pschdir.c
+	$(CC) $(CFLAGS) -o pschdir pschdir.c

pschdir/pschdir.c

@@ -0,0 +1,41 @@
+#include <errno.h> /* EACCESS, ELOOP, ENAMETOOLONG, ENOENT, ENOTDIR, errno */
+#include <stdio.h> /* fprintf(3) */
+#include <stdlib.h> /* stderr */
+#include <sysexits.h> /* EX_OSERR, EX_NOPERM, EX_NOINPUT, EX_UNAVAILABLE,
+                       * EX_USAGE */
+#include <unistd.h> /* chdir(2) */
+
+static char *program_name = "pschdir";
+
+int main(int argc, char *argv[]){
+
+	if(argc < 3){
+		fprintf(stderr,
+			"Usage: %s [directory] [command (argument...)]\n",
+			argv[0] == NULL ? program_name : argv[0]);
+		return EX_USAGE;
+	}
+
+	if(chdir(argv[1]) != 0){
+		fprintf(stderr, "%s: %s: ", argv[0], argv[1]);
+		switch(errno){
+		case EACCES:
+			fprintf(stderr, "Access to directory denied.\n");
+			return EX_NOPERM;
+		case ELOOP:
+			fprintf(stderr, "Symbolic link loop.\n");
+			return EX_UNAVAILABLE;
+		case ENAMETOOLONG:
+			fprintf(stderr, "Name too long.\n");
+			return EX_OSERR;
+		case ENOENT:
+			fprintf(stderr, "Not found.\n");
+			return EX_NOINPUT;
+		case ENOTDIR:
+			fprintf(stderr, "Not a directory.\n");
+			return EX_NOINPUT;
+		}
+	}
+
+	execvp(argv[2], argv + 2);
+}