diff --git a/src/extra-tools/66-gnwenv.c b/src/extra-tools/66-gnwenv.c
new file mode 100644
index 0000000000000000000000000000000000000000..8b133b7f39b5607b98eac17d6b8423da4ea0e704
--- /dev/null
+++ b/src/extra-tools/66-gnwenv.c
@@ -0,0 +1,145 @@
+/*
+ * 66-gnwenv.c
+ *
+ * Copyright (c) 2018-2019 Eric Vidal <eric@obarun.org>
+ *
+ * All rights reserved.
+ *
+ * This file is part of Obarun. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution.
+ * This file may not be copied, modified, propagated, or distributed
+ * except according to the terms contained in the LICENSE file./
+ */
+
+#include <string.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/wait.h>
+
+#include <oblibs/string.h>
+
+#include <skalibs/types.h>
+#include <skalibs/buffer.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/env.h>
+#include <skalibs/djbunix.h>
+
+#define MAX_ENV 4095
+static char const *pattern = 0 ;
+
+#define USAGE "66-gnwenv [ -m ] process dir file"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+static inline void info_help (void)
+{
+ static char const *help =
+"66-gnwenv <options> process dir file\n"
+"\n"
+"options :\n"
+" -h: print this help\n"
+" -m: create dir with given mode\n"
+;
+
+ if (buffer_putsflush(buffer_1, help) < 0)
+ strerr_diefu1sys(111, "write to stdout") ;
+}
+
+static void string_env(char *tmp,char const *s,size_t len)
+{
+ int pos = 0 ;
+ ssize_t r = 0 ;
+
+ while ((pos < len) && (r != -1))
+ {
+ r = get_len_until(s+pos,'\n') ;
+ memcpy(tmp+pos,s+pos,r) ;
+ tmp[pos+r] = 0 ;
+ pos += ++r ;/**+1 to skip the \n character*/
+ }
+}
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+ int r = 0 , pf, rm = 0, m = 0, fd[2], did = 0 ;
+ ssize_t slen = 0 ;
+
+ unsigned int mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ;
+
+ char const *dir = 0 , *file = 0 ;
+ char const *newargv[6+1] ;
+ char const *newread[5+1] ;
+ char md[UINT32_FMT] ;
+ char buf[MAX_ENV+1] ;
+ char tmp[MAX_ENV+1] ;
+
+ PROG = "66-gnwenv" ;
+ {
+ subgetopt_t l = SUBGETOPT_ZERO ;
+ for (;;)
+ {
+ int opt = subgetopt_r(argc, argv, "m:", &l) ;
+ if (opt == -1) break ;
+ switch (opt)
+ {
+ case 'm' : if (!uint0_oscan(l.arg, &mode)) dieusage() ; did = 1 ; break ;
+ default : dieusage() ;
+ }
+ }
+ argc -= l.ind ; argv += l.ind ;
+ }
+ if (argc < 3) dieusage() ;
+ pattern = argv[0] ;
+ dir = argv[1] ;
+ if (dir[0] != '/') strerr_dief2x(111,dir," must be an absolute path") ;
+ file = argv[2] ;
+
+ newread[rm++] = "66-getenv" ;
+ newread[rm++] = pattern ;
+ newread[rm++] = dir ;
+ newread[rm++] = file ;
+ newread[rm++] = 0 ;
+
+ if (pipe(fd) < 0) strerr_diefu1sys(111,"pipe") ;
+ pf = fork() ;
+ if (pf < 0) strerr_diefu1sys(111,"fork") ;
+ if (!pf)
+ {
+ dup2(fd[1],1) ;
+ pathexec(newread) ;
+ }
+ else
+ {
+ wait(NULL) ;
+ slen = read(fd[0],buf,MAX_ENV) ;
+ if (!slen) return 0 ;
+ buf[slen] = 0 ;
+ }
+ r = get_nbline(buf,slen) ;
+
+ string_env(tmp,buf,slen) ;
+
+ md[uint32_fmt(md,mode)] = 0 ;
+
+ newargv[m++] = "66-writenv" ;
+ if (did)
+ {
+ newargv[m++] = "-m" ;
+ newargv[m++] = md ;
+ }
+ newargv[m++] = dir ;
+ newargv[m++] = file ;
+ newargv[m++] = 0 ;
+
+ char const *v[r + 1] ;
+ if (!env_make (v, r ,tmp, slen)) strerr_diefu1sys(111,"make environment") ;
+ v[r] = 0 ;
+
+ xpathexec_fromenv (newargv, v, r) ;
+}
+
+
+
diff --git a/src/extra-tools/66-writenv.c b/src/extra-tools/66-writenv.c
new file mode 100644
index 0000000000000000000000000000000000000000..3329b4be7274e09d10d17b62a4d0f3e659efd590
--- /dev/null
+++ b/src/extra-tools/66-writenv.c
@@ -0,0 +1,105 @@
+/*
+ * 66-writenv.c
+ *
+ * Copyright (c) 2018-2019 Eric Vidal <eric@obarun.org>
+ *
+ * All rights reserved.
+ *
+ * This file is part of Obarun. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution.
+ * This file may not be copied, modified, propagated, or distributed
+ * except according to the terms contained in the LICENSE file./
+ */
+
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>//fsync,close
+#include <errno.h>
+
+#include <skalibs/types.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/buffer.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/djbunix.h>
+
+#define MAX_ENV 4095
+#define USAGE "66-writenv [ -m mode ] dir file"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+static inline void info_help (void)
+{
+ static char const *help =
+"66-writenv <options> dir file\n"
+"\n"
+"options :\n"
+" -h: print this help\n"
+" -m: create dir with given mode\n"
+;
+
+ if (buffer_putsflush(buffer_1, help) < 0)
+ strerr_diefu1sys(111, "write to stdout") ;
+}
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+ unsigned int mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ;
+ size_t dirlen, filen ;
+ buffer b ;
+ int fd ;
+ char const *dir = 0 , *file = 0 ;
+ char buf[MAX_ENV+1] ;
+ PROG = "66-writenv" ;
+ {
+ subgetopt_t l = SUBGETOPT_ZERO ;
+ for (;;)
+ {
+ int opt = subgetopt_r(argc, argv, "hm:", &l) ;
+ if (opt == -1) break ;
+ switch (opt)
+ {
+ case 'h' : info_help() ; return 0 ;
+ case 'm' : if (!uint0_oscan(l.arg, &mode)) dieusage() ; break ;
+ default : dieusage() ;
+ }
+ }
+ argc -= l.ind ; argv += l.ind ;
+ }
+ if (argc < 2) dieusage() ;
+ dir = argv[0] ;
+ if (dir[0] != '/') strerr_dief2x(111,dir," must be an absolute path") ;
+ file = argv[1] ;
+
+ if (mkdir(dir, mode) < 0)
+ {
+ struct stat st ;
+ if (errno != EEXIST) strerr_diefu2sys(111, "mkdir ", dir) ;
+ if (stat(dir, &st) < 0)
+ strerr_diefu2sys(111, "stat ", dir) ;
+ if (!S_ISDIR(st.st_mode))
+ {
+ errno = ENOTDIR ;
+ strerr_diefu2sys(111, "mkdir ", dir) ;
+ }
+ }
+ dirlen = strlen(dir) ;
+ filen = strlen(file) ;
+ char fn[dirlen + 1 + filen + 1] ;
+ memcpy(fn,dir,dirlen) ;
+ fn[dirlen] = '/' ;
+ memcpy(fn + dirlen + 1, file ,filen) ;
+ fn[dirlen + 1 + filen] = 0 ;
+ fd = open_trunc(fn) ;
+ if (fd < 0) strerr_diefu2sys(111,"open trunc: ",fn) ;
+ buffer_init(&b,&buffer_write,fd,buf,MAX_ENV) ;
+ for (; *envp ; envp++)
+ {
+ if ((buffer_put(&b, *envp,strlen(*envp)) < 0) ||
+ (buffer_put(&b, "\n",1) < 0)) { close(fd) ; strerr_diefu1sys(111,"write buffer") ; }
+ }
+ if(!buffer_flush(&b)){ close(fd) ; strerr_diefu1sys(111,"flush") ; }
+ if (fsync(fd) < 0){ close(fd) ; strerr_diefu1sys(111,"sync") ; }
+ close(fd) ;
+ return 0 ;
+}
diff --git a/src/extra-tools/deps-exe/66-gnwenv b/src/extra-tools/deps-exe/66-gnwenv
new file mode 100644
index 0000000000000000000000000000000000000000..aa08a1493330806f8a201d878aa14bb087db05a3
--- /dev/null
+++ b/src/extra-tools/deps-exe/66-gnwenv
@@ -0,0 +1,3 @@
+-loblibs
+-lskarnet
+
diff --git a/src/extra-tools/deps-exe/66-writenv b/src/extra-tools/deps-exe/66-writenv
new file mode 100644
index 0000000000000000000000000000000000000000..e7187fe2cfb010b60c595e7919426c2a13324a70
--- /dev/null
+++ b/src/extra-tools/deps-exe/66-writenv
@@ -0,0 +1 @@
+-lskarnet