Strange problem cropping up. I chain scripts with command sequences for long running numerical calculations executed from the initial mintty terminal. Running from a non administrative session. The form is --- #!/bin/bash cd /cygdrive/j/tri60/221-1344c_1.933 mcnp62.sh 221-1344c.mas3.87 221-1344c.baseh.s mcnp62.sh 221-1344c.mas3.87a 221-1344c.mas3.87.s sh -v ~xxxx/grd.sh & exit --- The sequence runs through one or more of the execution groups and then fails with --- xxxx@Dell-Studio ~ $ cd /cygdrive/j/tri60/220-1116c_1.993 -bash: cd: /cygdrive/j/tri60/220-1116c_1.993: No such file or directory --- I see the directory in emacs and have full access to it. From the terminal --- xxxx@Dell-Studio ~ $ cd /cygdrive xxxx@Dell-Studio /cygdrive $ cd j xxxx@Dell-Studio /cygdrive/j $ cd tri60 xxxx@Dell-Studio /cygdrive/j/tri60 $ cd 220-1116c_1.993 -bash: cd: 220-1116c_1.993: No such file or directory --- From emacs the dired listings are --- /cygdrive: total 84 dr-xr-xr-x 1 xxxx None 0 Feb 24 16:12 . drwxr-xr-x+ 1 Qyyy None 0 Jun 4 2018 .. drwxrwx---+ 1 SYSTEM SYSTEM 0 Feb 24 15:58 c drwxrwx---+ 1 SYSTEM SYSTEM 0 Feb 23 14:42 d drwxr-x---+ 1 Qyyy None 0 Feb 2 23:45 h drwsrwsrwx+ 1 Qyyy None 0 Feb 24 15:48 j drwxrwxr-x 1 Unix_User+0 Unix_Group+0 0 Feb 23 14:53 u drwxrwxr-x 1 Unix_User+0 Unix_Group+0 0 Mar 7 2019 v drwxrwxr-x 1 Unix_User+0 Unix_Group+0 0 Feb 8 15:48 w drwxrwxr-x 1 Unix_User+48 Unix_Group+100 0 Apr 22 2021 x drwxrwxrwx 1 Unix_User+48 Unix_Group+100 0 Jun 4 2021 z --- The listing for /cygdrive/j/tri60 is --- /cygdrive/j/tri60: total used in directory 3569 available 601771488 drwxrwxrwx+ 1 xxxx None 0 Feb 24 16:29 . drwsrwsrwx+ 1 Qyyy None 0 Feb 24 15:48 .. drwxrwxr-x+ 1 xxxx SYSTEM 0 Jun 25 2012 207-1120c_2.2-kvi drwxrwxr-x+ 1 xxxx SYSTEM 0 May 9 2012 208-1539c_2.2-kvi -rw-rw-rw-+ 1 xxxx SYSTEM 39 Nov 24 23:27 212-1513c.len59.619ac.m drwxrwsrwx+ 1 xxxx SYSTEM 0 Feb 22 22:45 212-1513c_1.642 -rwxrwxr--+ 1 xxxx SYSTEM 181056 Feb 22 11:08 212-1513c_1.642.xlsx -rwxrwxr--+ 1 xxxx SYSTEM 179379 Apr 10 2012 214-0925_1.642.xlsx drwxrwxr-x+ 1 xxxx SYSTEM 0 Apr 9 2012 214-0925_1.642-kvi drwxrwxrwx+ 1 xxxx None 0 Jan 31 15:55 214-1010c_1.642 -rwxrwxr--+ 1 xxxx SYSTEM 203825 Feb 8 09:17 214-1010c_1.642.xlsx drwxrwsrwx+ 1 xxxx SYSTEM 0 Feb 7 15:33 219-1048c_1.933 drwxrwxrwx+ 1 xxxx None 0 Feb 24 15:53 220-1116c_1.933 -rwxrwxr--+ 1 xxxx SYSTEM 160531 Feb 23 15:03 220-1116c_1.933.xlsx drwxrwsrwx+ 1 xxxx SYSTEM 0 Feb 7 15:30 221-1344c_1.933 -rwxrwxr--+ 1 xxxx SYSTEM 160451 Feb 22 11:25 221-1344c_1.933.xlsx drwxrwxr-x+ 1 xxxx SYSTEM 0 May 11 2012 229-1500c_2.63-kvi drwxrwxr-x+ 1 xxxx SYSTEM 0 May 9 2012 229-1530c_2.63-kvi drwxrwsrwx+ 1 xxxx SYSTEM 0 Feb 7 15:32 230-c_2.63 drwxrwsrwx+ 1 xxxx SYSTEM 0 Feb 7 15:31 232-1520c_3.11 drwxrwsrwx+ 1 xxxx SYSTEM 0 Feb 7 15:31 234-0911c_3.11 -rwxrwxr--+ 1 xxxx SYSTEM 153152 Mar 8 2012 269-1020c_1.396.xlsx drwxrwsrwx+ 1 xxxx SYSTEM 0 Jan 22 07:57 270-1055c_1.396 ----rwxr--+ 1 xxxx None 192601 Jan 16 21:09 270-1055c_1.396.xlsx drwxrwsrwx+ 1 xxxx SYSTEM 0 Dec 29 13:48 270-1310_1.396 -rwxrwxrwx+ 1 xxxx None 195249 Jan 24 12:54 270-1310_1.396.xlsx drwxrwxr-x+ 1 xxxx SYSTEM 0 Jan 11 23:55 271-1405c_1.396 -rwxrwxrwx+ 1 xxxx None 175723 Jan 24 12:55 271-1405c_1.396.xlsx --- The dired initial elements of the directory of interest --- /cygdrive/j/tri60/220-1116c_1.933: total used in directory 5289808 available 601772000 drwxrwxrwx+ 1 xxxx None 0 Feb 24 15:53 . drwxrwxrwx+ 1 xxxx None 0 Feb 23 15:03 .. drwxrwsrwx+ 1 xxxx None 0 Feb 21 01:19 0.65 -rwxrwxr-x+ 1 xxxx None 1943788 Jan 30 06:00 212-1513c.basea.s -rwxrwxr-x+ 1 xxxx None 86340 Feb 23 06:21 220-1116c.bas0.00.log -rw-rw-rw-+ 1 xxxx None 14263 Feb 22 22:18 220-1116c.bas0.00.m -rwxrwxr-x+ 1 xxxx None 1455095 Feb 23 06:21 220-1116c.bas0.00.o --- Started Cygwin as an administrator --- Qyyy@Dell-Studio ~ sh -v ~xxxx/grd.sh & $ #!/bin/bash cd /cygdrive/j/tri60/220-1116c_1.993 /home/xxxx/rods.sh: line 2: cd: /cygdrive/j/tri60/220-1116c_1.993: No such file or directory --- Shutdown Cygwin and did a restart of Windows 10 home problems still exist. Updated Cygwin. Problems still exist. Problems also occur on a new system with Windows 10 pro and fresh Cygwin install. If I make the desired directory the working directory in emacs and use the emacs command feature to execute the script, it works. The cd command fails but since it is in the proper directory the files are available for the rest of the script. --- #!/bin/bash cd /cygdrive/j/tri60/221-1344c_1.642 /home/xxx/grd.sh: line 2: cd: /cygdrive/j/tri60/221-1344c_1.642: No such file or directory mcnp62.sh 221-1344c.mas3.71 221-1344c.mas3.83a.s #!/bin/bash cd /cygdrive/j/tri60/221-1344c_1.642 /home/xxx/grd.sh: line 2: cd: /cygdrive/j/tri60/221- 1344c_1.642: No such file or directory mcnp62.sh 221-1344c.mas3.71 221-1344c.mas3.83a.s