I'm trying to start with tmux but am failing to even run it.Immediately after starting it exits, similar to this question.It happens both without a .tmux.conf, and (following some examples) with this .tmux.conf:set -g default-shell /usr/bin/zshset -g status onset -g history-limit 10000000set -g prefix C-tset -g status-bg greensetw -g window-status-current-bg cyansetw -g window-status-current-attr boldset -g status-right '#7H | %F %s'bind-key C-t last-windowsetw -g monitor-activity onset -g visual-activity onAdding new-session in the beginning of the .tmux.conf, as suggested some places doesn't help, and this happens when I use tmux new $SHELL also (again suggested to solve this somewhere).I am using:tmux 1.9aUbuntu 14.04zsh 5.0.2My tmux-server.log file shows this after tmux -v:server started, pid 19654socket path /tmp/tmux-1000/defaultnew client 7loading /home/alon/.tmux.conf/home/alon/.tmux.conf: new-session/home/alon/.tmux.conf: set -g default-shell /usr/bin/zsh/home/alon/.tmux.conf: set -g status on/home/alon/.tmux.conf: set -g history-limit 10000000/home/alon/.tmux.conf: set -g prefix C-t/home/alon/.tmux.conf: set -g status-bg green/home/alon/.tmux.conf: setw -g window-status-current-bg cyan/home/alon/.tmux.conf: setw -g window-status-current-attr bold/home/alon/.tmux.conf: /home/alon/.tmux.conf: set -g status-right '#7H | %F %s'/home/alon/.tmux.conf: /home/alon/.tmux.conf: bind-key C-t last-window/home/alon/.tmux.conf: /home/alon/.tmux.conf: setw -g monitor-activity on/home/alon/.tmux.conf: set -g visual-activity oncmdq 0x7f75d1784b50: new-session (client -1)spawn: /usr/bin/zsh -- session 0 createdcmdq 0x7f75d1784b50: set-option -g default-shell /usr/bin/zsh (client -1)cmdq 0x7f75d1784b50: set-option -g status on (client -1)cmdq 0x7f75d1784b50: set-option -g history-limit 10000000 (client -1)cmdq 0x7f75d1784b50: set-option -g prefix C-t (client -1)cmdq 0x7f75d1784b50: set-option -g status-bg green (client -1)cmdq 0x7f75d1784b50: set-window-option -g window-status-current-bg cyan (client -1)cmdq 0x7f75d1784b50: set-window-option -g window-status-current-attr bold (client -1)cmdq 0x7f75d1784b50: set-option -g status-right #7H | %F %s (client -1)cmdq 0x7f75d1784b50: bind-key C-t last-window (client -1)cmdq 0x7f75d1784b50: set-window-option -g monitor-activity on (client -1)cmdq 0x7f75d1784b50: set-option -g visual-activity on (client -1)got 100 from client 7got 101 from client 7got 102 from client 7got 103 from client 7got 104 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 105 from client 7got 106 from client 7got 200 from client 7cmdq 0x7f75d176b260: new-session (client 7)new term: xtermxterm override: XT xterm override: Ms ]52;%p1%s;%p2%sxterm override: Cs ]12;%p1%sxterm override: Cr ]112xterm override: Ss [%p1%d qxterm override: Se [2 qnew key Oo: 0x1021 (KP/)new key Oj: 0x1022 (KP*)new key Om: 0x1023 (KP-)new key Ow: 0x1024 (KP7)new key Ox: 0x1025 (KP8)new key Oy: 0x1026 (KP9)new key Ok: 0x1027 (KP+)new key Ot: 0x1028 (KP4)new key Ou: 0x1029 (KP5)new key Ov: 0x102a (KP6)new key Oq: 0x102b (KP1)new key Or: 0x102c (KP2)new key Os: 0x102d (KP3)new key OM: 0x102e (KPEnter)new key Op: 0x102f (KP0)new key On: 0x1030 (KP.)new key OA: 0x101d (Up)new key OB: 0x101e (Down)new key OC: 0x1020 (Right)new key OD: 0x101f (Left)new key [A: 0x101d (Up)new key [B: 0x101e (Down)new key [C: 0x1020 (Right)new key [D: 0x101f (Left)new key OH: 0x1018 (Home)new key OF: 0x1019 (End)new key [H: 0x1018 (Home)new key [F: 0x1019 (End)new key Oa: 0x501d (C-Up)new key Ob: 0x501e (C-Down)new key Oc: 0x5020 (C-Right)new key Od: 0x501f (C-Left)new key [a: 0x901d (S-Up)new key [b: 0x901e (S-Down)new key [c: 0x9020 (S-Right)new key [d: 0x901f (S-Left)new key [11^: 0x5002 (C-F1)new key [12^: 0x5003 (C-F2)new key [13^: 0x5004 (C-F3)new key [14^: 0x5005 (C-F4)new key [15^: 0x5006 (C-F5)new key [17^: 0x5007 (C-F6)new key [18^: 0x5008 (C-F7)new key [19^: 0x5009 (C-F8)new key [20^: 0x500a (C-F9)new key [21^: 0x500b (C-F10)new key [23^: 0x500c (C-F11)new key [24^: 0x500d (C-F12)new key [25^: 0x500e (C-F13)new key [26^: 0x500f (C-F14)new key [28^: 0x5010 (C-F15)new key [29^: 0x5011 (C-F16)new key [31^: 0x5012 (C-F17)new key [32^: 0x5013 (C-F18)new key [33^: 0x5014 (C-F19)new key [34^: 0x5015 (C-F20)new key [2^: 0x5016 (C-IC)new key [3^: 0x5017 (C-DC)new key [7^: 0x5018 (C-Home)new key [8^: 0x5019 (C-End)new key [6^: 0x501a (C-NPage)new key [5^: 0x501b (C-PPage)new key [11$: 0x9002 (S-F1)new key [12$: 0x9003 (S-F2)new key [13$: 0x9004 (S-F3)new key [14$: 0x9005 (S-F4)new key [15$: 0x9006 (S-F5)new key [17$: 0x9007 (S-F6)new key [18$: 0x9008 (S-F7)new key [19$: 0x9009 (S-F8)new key [20$: 0x900a (S-F9)new key [21$: 0x900b (S-F10)new key [23$: 0x900c (S-F11)new key [24$: 0x900d (S-F12)new key [25$: 0x900e (S-F13)new key [26$: 0x900f (S-F14)new key [28$: 0x9010 (S-F15)new key [29$: 0x9011 (S-F16)new key [31$: 0x9012 (S-F17)new key [32$: 0x9013 (S-F18)new key [33$: 0x9014 (S-F19)new key [34$: 0x9015 (S-F20)new key [2$: 0x9016 (S-IC)new key [3$: 0x9017 (S-DC)new key [7$: 0x9018 (S-Home)new key [8$: 0x9019 (S-End)new key [6$: 0x901a (S-NPage)new key [5$: 0x901b (S-PPage)new key [11@: 0xd002 (C-S-F1)new key [12@: 0xd003 (C-S-F2)new key [13@: 0xd004 (C-S-F3)new key [14@: 0xd005 (C-S-F4)new key [15@: 0xd006 (C-S-F5)new key [17@: 0xd007 (C-S-F6)new key [18@: 0xd008 (C-S-F7)new key [19@: 0xd009 (C-S-F8)new key [20@: 0xd00a (C-S-F9)new key [21@: 0xd00b (C-S-F10)new key [23@: 0xd00c (C-S-F11)new key [24@: 0xd00d (C-S-F12)new key [25@: 0xd00e (C-S-F13)new key [26@: 0xd00f (C-S-F14)new key [28@: 0xd010 (C-S-F15)new key [29@: 0xd011 (C-S-F16)new key [31@: 0xd012 (C-S-F17)new key [32@: 0xd013 (C-S-F18)new key [33@: 0xd014 (C-S-F19)new key [34@: 0xd015 (C-S-F20)new key [2@: 0xd016 (C-S-IC)new key [3@: 0xd017 (C-S-DC)new key [7@: 0xd018 (C-S-Home)new key [8@: 0xd019 (C-S-End)new key [6@: 0xd01a (C-S-NPage)new key [5@: 0xd01b (C-S-PPage)new key [I: 0x1031 ((null))new key [O: 0x1032 ((null))new key OP: 0x1002 (F1)new key OQ: 0x1003 (F2)new key OR: 0x1004 (F3)new key OS: 0x1005 (F4)new key [15~: 0x1006 (F5)new key [17~: 0x1007 (F6)new key [18~: 0x1008 (F7)new key [19~: 0x1009 (F8)new key [20~: 0x100a (F9)new key [21~: 0x100b (F10)new key [23~: 0x100c (F11)new key [24~: 0x100d (F12)new key [1;2P: 0x100e (F13)new key [1;2Q: 0x100f (F14)new key [1;2R: 0x1010 (F15)new key [1;2S: 0x1011 (F16)new key [15;2~: 0x1012 (F17)new key [17;2~: 0x1013 (F18)new key [18;2~: 0x1014 (F19)new key [19;2~: 0x1015 (F20)new key [2~: 0x1016 (IC)new key [3~: 0x1017 (DC)replacing key OH: 0x1018 (Home)replacing key OF: 0x1019 (End)new key [6~: 0x101a (NPage)new key [5~: 0x101b (PPage)new key [Z: 0x101c (BTab)replacing key OA: 0x101d (Up)replacing key OB: 0x101e (Down)replacing key OD: 0x101f (Left)replacing key OC: 0x1020 (Right)new key [3;2~: 0x9017 (S-DC)new key [3;3~: 0x3017 (M-DC)new key [3;4~: 0xb017 (M-S-DC)new key [3;5~: 0x5017 (C-DC)new key [3;6~: 0xd017 (C-S-DC)new key [3;7~: 0x7017 (C-M-DC)new key [1;2B: 0x901e (S-Down)new key [1;3B: 0x301e (M-Down)new key [1;4B: 0xb01e (M-S-Down)new key [1;5B: 0x501e (C-Down)new key [1;6B: 0xd01e (C-S-Down)new key [1;7B: 0x701e (C-M-Down)new key [1;2F: 0x9019 (S-End)new key [1;3F: 0x3019 (M-End)new key [1;4F: 0xb019 (M-S-End)new key [1;5F: 0x5019 (C-End)new key [1;6F: 0xd019 (C-S-End)new key [1;7F: 0x7019 (C-M-End)new key [1;2H: 0x9018 (S-Home)new key [1;3H: 0x3018 (M-Home)new key [1;4H: 0xb018 (M-S-Home)new key [1;5H: 0x5018 (C-Home)new key [1;6H: 0xd018 (C-S-Home)new key [1;7H: 0x7018 (C-M-Home)new key [2;2~: 0x9016 (S-IC)new key [2;3~: 0x3016 (M-IC)new key [2;4~: 0xb016 (M-S-IC)new key [2;5~: 0x5016 (C-IC)new key [2;6~: 0xd016 (C-S-IC)new key [2;7~: 0x7016 (C-M-IC)new key [1;2D: 0x901f (S-Left)new key [1;3D: 0x301f (M-Left)new key [1;4D: 0xb01f (M-S-Left)new key [1;5D: 0x501f (C-Left)new key [1;6D: 0xd01f (C-S-Left)new key [1;7D: 0x701f (C-M-Left)new key [6;2~: 0x901a (S-NPage)new key [6;3~: 0x301a (M-NPage)new key [6;4~: 0xb01a (M-S-NPage)new key [6;5~: 0x501a (C-NPage)new key [6;6~: 0xd01a (C-S-NPage)new key [6;7~: 0x701a (C-M-NPage)new key [5;2~: 0x901b (S-PPage)new key [5;3~: 0x301b (M-PPage)new key [5;4~: 0xb01b (M-S-PPage)new key [5;5~: 0x501b (C-PPage)new key [5;6~: 0xd01b (C-S-PPage)new key [5;7~: 0x701b (C-M-PPage)new key [1;2C: 0x9020 (S-Right)new key [1;3C: 0x3020 (M-Right)new key [1;4C: 0xb020 (M-S-Right)new key [1;5C: 0x5020 (C-Right)new key [1;6C: 0xd020 (C-S-Right)new key [1;7C: 0x7020 (C-M-Right)new key [1;2A: 0x901d (S-Up)new key [1;3A: 0x301d (M-Up)new key [1;4A: 0xb01d (M-S-Up)new key [1;5A: 0x501d (C-Up)new key [1;6A: 0xd01d (C-S-Up)new key [1;7A: 0x701d (C-M-Up)spawn: /usr/bin/zsh -- session 1 createdwriting 207 to client 7got 208 from client 7keys are 9 ([?62;9;c)received service class 62complete key [?62;9;c 0xfffsession 0 destroyedsession 1 destroyedwriting 203 to client 7got 205 from client 7writing 204 to client 7lost client 7UPDATE: Here are the results from running strace tmux:execve(/usr/bin/tmux, [tmux], [/* 103 vars */]) = 0 brk(0)        = 0x7f86ea097000 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86e817b000 access(/etc/ld.so.preload, R_OK)      = -1 ENOENT (No such file or directory) open(/etc/ld.so.cache, O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=117788, ...}) = 0 mmap(NULL, 117788, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f86e815e000 close(3)               = 0 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) open(/lib/x86_64-linux-gnu/libutil.so.1, O_RDONLY|O_CLOEXEC) = 3 read(3, \177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20\17\0\0\0\0\0\0..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=10680, ...}) = 0 mmap(NULL, 2105624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f86e7d58000 mprotect(0x7f86e7d5a000, 2093056, PROT_NONE) = 0 mmap(0x7f86e7f59000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7f86e7f59000 close(3)                                = 0 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) open(/lib/x86_64-linux-gnu/libtinfo.so.5, O_RDONLY|O_CLOEXEC) = 3 read(3, \177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\303\0\0\0\0\0\0..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=167096, ...}) = 0 mmap(NULL, 2264288, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f86e7b2f000 mprotect(0x7f86e7b54000, 2093056, PROT_NONE) = 0 mmap(0x7f86e7d53000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0x7f86e7d53000 close(3)                                = 0 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) open(/usr/lib/x86_64-linux-gnu/libevent-2.0.so.5, O_RDONLY|O_CLOEXEC) = 3 read(3, \177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\236\0\0\0\0\0\0..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=276880, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86e815d000 mmap(NULL, 2373864, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f86e78eb000 mprotect(0x7f86e792d000, 2097152, PROT_NONE) = 0 mmap(0x7f86e7b2d000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x42000) = 0x7f86e7b2d000 close(3)                                = 0 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) open(/lib/x86_64-linux-gnu/libresolv.so.2, O_RDONLY|O_CLOEXEC) = 3 read(3, \177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320:\0\0\0\0\0\0..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=101240, ...}) = 0 mmap(NULL, 2206376, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f86e76d0000 mprotect(0x7f86e76e7000, 2097152, PROT_NONE) = 0 mmap(0x7f86e78e7000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f86e78e7000 mmap(0x7f86e78e9000, 6824, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f86e78e9000 close(3) = 0 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) open(/lib/x86_64-linux-gnu/libc.so.6, O_RDONLY|O_CLOEXEC) = 3 read(3, \177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\37\2\0\0\0\0\0..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1845024, ...}) = 0 mmap(NULL, 3953344, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f86e730a000 mprotect(0x7f86e74c5000, 2097152, PROT_NONE) = 0 mmap(0x7f86e76c5000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bb000) = 0x7f86e76c5000 mmap(0x7f86e76cb000, 17088, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f86e76cb000 close(3) = 0 access(/etc/ld.so.nohwcap, F_OK)      = -1 ENOENT (No such file or directory) open(/lib/x86_64-linux-gnu/libpthread.so.0, O_RDONLY|O_CLOEXEC) = 3 read(3, \177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0po\0\0\0\0\0\0..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=141574, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86e815c000 mmap(NULL, 2217264, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f86e70ec000 mprotect(0x7f86e7105000, 2093056, PROT_NONE) = 0 mmap(0x7f86e7304000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f86e7304000 mmap(0x7f86e7306000, 13616, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f86e7306000 close(3)                                = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86e815b000 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86e8159000 arch_prctl(ARCH_SET_FS, 0x7f86e8159740) = 0 mprotect(0x7f86e76c5000, 16384, PROT_READ) = 0 mprotect(0x7f86e7304000, 4096, PROT_READ) = 0 mprotect(0x7f86e78e7000, 4096, PROT_READ) = 0 mprotect(0x7f86e7b2d000, 4096, PROT_READ) = 0 mprotect(0x7f86e7d53000, 16384, PROT_READ) = 0 mprotect(0x7f86e7f59000, 4096, PROT_READ) = 0 mprotect(0x7f86e83ea000, 36864, PROT_READ) = 0 mprotect(0x7f86e817d000, 4096, PROT_READ) = 0 munmap(0x7f86e815e000, 117788)          = 0 set_tid_address(0x7f86e8159a10)         = 13671 set_robust_list(0x7f86e8159a20, 24)     = 0 futex(0x7fffc947f210, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 7f86e8159740)= -1 EAGAIN (Resource temporarily unavailable) rt_sigaction(SIGRTMIN, {0x7f86e70f29f0, [], SA_RESTORER|SA_SIGINFO, 0x7f86e70fc340}, NULL, 8)= 0 rt_sigaction(SIGRT_1, {0x7f86e70f2a80, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f86e70fc340}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 brk(0)                                 = 0x7f86ea097000 brk(0x7f86ea0b8000)                     = 0x7f86ea0b8000 open(/usr/lib/locale/locale-archive, O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=4427728, ...}) = 0 mmap(NULL, 4427728, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f86e6cb3000 close(3)                                = 0 getcwd(/tmp, 4096)                    = 5 access(/usr/bin/zsh, X_OK)            = 0 access(/home/alon/.tmux.conf, R_OK)   = 0 getuid()                                = 1000 mkdir(/tmp/user/1000/tmux-1000, 0700) = -1 EEXIST (File exists) lstat(/tmp/user/1000/tmux-1000, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat(/tmp, {st_mode=S_IFDIR|S_ISVTX|0777, st_size=126976, ...}) = 0 lstat(/tmp/user, {st_mode=S_IFDIR|0711, st_size=4096, ...}) = 0 lstat(/tmp/user/1000, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 lstat(/tmp/user/1000/tmux-1000, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getuid()                                = 1000 geteuid()                               = 1000 getgid()               = 1000 getegid()                               = 1000 getuid()                                = 1000 geteuid()                               = 1000 getgid()                                = 1000 getegid()                               = 1000 socketpair(PF_LOCAL, SOCK_STREAM, 0, [3, 4]) = 0 fcntl(3, F_GETFD)    = 0 fcntl(3, F_SETFD, FD_CLOEXEC)           = 0 fcntl(4, F_GETFD)                       = 0 fcntl(4, F_SETFD, FD_CLOEXEC)           = 0 fcntl(3, F_GETFL)                       = 0x2 (flags O_RDWR) fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK)    = 0 fcntl(4, F_GETFL)                       = 0x2 (flags O_RDWR) fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK)    = 0 getuid()                           = 1000 geteuid()                               = 1000 getgid()                                = 1000 getegid()                               = 1000 socket(PF_LOCAL, SOCK_STREAM, 0)        = 5 connect(5, {sa_family=AF_LOCAL, sun_path=/tmp/user/1000/tmux-1000/default}, 34) = -1 ECONNREFUSED (Connection refused) close(5)                                = 0 open(/tmp/user/1000/tmux-1000/default.lock, O_WRONLY|O_CREAT, 0600)= 5 fcntl(5, F_SETLK, {type=F_WRLCK, whence=SEEK_CUR, start=0, len=0}) = 0 unlink(/tmp/user/1000/tmux-1000/default) = 0 socketpair(PF_LOCAL, SOCK_STREAM, 0, [6, 7]) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f86e8159a10) = 13672 close(7)                         = 0 close(5)                                = 0 fcntl(6, F_GETFL)                       = 0x2 (flags O_RDWR) fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK)    = 0--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13672, si_status=0, si_utime=0, si_stime=0} --- fcntl(0, F_GETFL)            = 0x8002 (flags O_RDWR|O_LARGEFILE) fcntl(0, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE) = 0 rt_sigaction(SIGINT, {SIG_IGN, [], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, NULL, 8) = 0 rt_sigaction(SIGPIPE, {SIG_IGN, [], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, NULL, 8) = 0 rt_sigaction(SIGUSR2, {SIG_IGN, [], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, NULL, 8) = 0 rt_sigaction(SIGTSTP, {SIG_IGN, [], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, NULL, 8) = 0 rt_sigaction(SIGHUP, {0x7f86e790c770, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, {SIG_DFL, [], 0}, 8) = 0 rt_sigaction(SIGCHLD, {0x7f86e790c770, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, {SIG_DFL, [], 0}, 8) = 0 rt_sigaction(SIGCONT, {0x7f86e790c770, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, {SIG_DFL, [], 0}, 8) = 0 rt_sigaction(SIGTERM, {0x7f86e790c770, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, {SIG_DFL, [], 0}, 8) = 0 rt_sigaction(SIGUSR1, {0x7f86e790c770, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, {SIG_DFL, [], 0}, 8) = 0 rt_sigaction(SIGWINCH, {0x7f86e790c770, ~[RTMIN RT_1], SA_RESTORER|SA_RESTART, 0x7f86e7340c30}, {SIG_DFL, [], 0}, 8) = 0 ioctl(0, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 fstat(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 16), ...}) = 0 readlink(/proc/self/fd/0, /dev/pts/16, 4095) = 11 stat(/dev/pts/16, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 16), ...}) = 0 open(., O_RDONLY)                     = 5 dup(0)          = 7 poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN|POLLOUT}], 2, 4294967295) = 1 ([{fd=6, revents=POLLOUT}]) sendmsg(6, {msg_name(0)=NULL, msg_iov(4)=[{d\0\0\0\24\0\0\0\10\0\0\0\377\377\377\377\0\0\1\0, 20}, {e\0\0\0\26\0\0\0\10\0\0\0\377\377\377\377xterm\0, 22}, {f\0\0\0\34\0\0\0\10\0\0\0\377\377\377\377/dev/pts/16\0, 28}, {g\0\0\0\20\0\1\0\10\0\0\0\377\377\377\377, 16}], msg_controllen=24, {cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, {5}}, msg_flags=0}, 0) = 86 close(5)                                = 0 poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN|POLLOUT}], 2, 4294967295) = 1 ([{fd=6, revents=POLLOUT}]) sendmsg(6, {msg_name(0)=NULL, msg_iov(1)=[{h\0\0\0\20\0\1\0\10\0\0\0\377\377\377\377, 16}], msg_controllen=24, {cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, {7}}, msg_flags=0}, 0) = 16 close(7)            = 0 poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN|POLLOUT}], 2, 4294967295) = 1 ([{fd=6, revents=POLLOUT}]) sendmsg(6, {msg_name(0)=NULL, msg_iov(106)=[{i\0\0\0\37\0\0\0\10\0\0\0\377\377\377\377XDG_SEAT=seat0\0, 31}, {i\0\0\0\\0\0\0\10\0\0\0\377\377\377\377XDG_SESSION_ID=c..., 34}, {i\0\0\0.\0\0\0\10\0\0\0\377\377\377\377LC_IDENTIFICATIO..., 46}, {i\0\0\0r\0\0\0\10\0\0\0\377\377\377\377SESSION_MANAGER=..., 114}, {i\0\0\0003\0\0\0\10\0\0\0\377\377\377\377GIO_LAUNCHED_DES..., 51}, {i\0\0\0\33\0\0\0\10\0\0\0\377\377\377\377DISPLAY=:0\0, 27}, {i\0\0\0&\0\0\0\10\0\0\0\377\377\377\377TMPDIR=/tmp/user..., 38}, {i\0\0\0\31\0\0\0\10\0\0\0\377\377\377\377JOB=dbus\0, 25}, {i\0\0\0D\0\0\0\10\0\0\0\377\377\377\377GNOME_KEYRING_CO..., 68}, {i\0\0\0<\0\0\0\10\0\0\0\377\377\377\377GNOME_DESKTOP_SE..., 60}, {i\0\0\0C\0\0\0\10\0\0\0\377\377\377\377DEFAULTS_PATH=/u..., 67}, {i\0\0\0001\0\0\0\10\0\0\0\377\377\377\377QT_QPA_PLATFORMT..., 49}, {i\0\0\0\35\0\0\0\10\0\0\0\377\377\377\377LOGNAME=alon\0, 29}, {i\0\0\0%\0\0\0\10\0\0\0\377\377\377\377TEXTDOMAIN=im-co..., 37}, {i\0\0\0\32\0\0\0\10\0\0\0\377\377\377\377INSTANCE=\0, 26}, {i\0\0\0$\0\0\0\10\0\0\0\377\377\377\377LC_TIME=en_US.UT..., 36}, {i\0\0\0#\0\0\0\10\0\0\0\377\377\377\377SHELL=/usr/bin/z..., 35}, {i\0\0\0!\0\0\0\10\0\0\0\377\377\377\377PAPERSIZE=letter..., 33}, {i\0\0\0\200\1\0\0\10\0\0\0\377\377\377\377PATH=/home/alon/..., 384}, {i\0\0\0'\0\0\0\10\0\0\0\377\377\377\377LC_NUMERIC=en_US..., 39}, {i\0\0\0%\0\0\0\10\0\0\0\377\377\377\377LC_PAPER=en_US.U..., 37}, {i\0\0\0\\0\0\0\10\0\0\0\377\377\377\377IM_CONFIG_PHASE=..., 34}, {i\0\0\0%\0\0\0\10\0\0\0\377\377\377\377WEBIDE_JDK=/opt/..., 37}, {i\0\0\0$\0\0\0\10\0\0\0\377\377\377\377XMODIFIERS=@im=n..., 36}, {i\0\0\0\\0\0\0\10\0\0\0\377\377\377\377QT4_IM_MODULE=xi..., 34}, {i\0\0\0J\0\0\0\10\0\0\0\377\377\377\377XDG_SESSION_PATH..., 74}, {i\0\0\0\37\0\0\0\10\0\0\0\377\377\377\377SESSION=ubuntu\0, 31}, {i\0\0\0001\0\0\0\10\0\0\0\377\377\377\377TEXTDOMAINDIR=/u..., 49}, {i\0\0\0@\0\0\0\10\0\0\0\377\377\377\377SSH_AUTH_SOCK=/r..., 64}, {i\0\0\0002\0\0\0\10\0\0\0\377\377\377\377XAUTHORITY=/home..., 50}, {i\0\0\0'\0\0\0\10\0\0\0\377\377\377\377XDG_MENU_PREFIX=..., 39}, {i\0\0\0\\0\0\0\10\0\0\0\377\377\377\377GDMSESSION=ubunt..., 34}, ...], msg_controllen=0, msg_flags=0}, 0) = 5415 poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}], 2, 4294967295) = 1 ([{fd=6, revents=POLLIN}]) recvmsg(6, {msg_name(0)=NULL, msg_iov(1)=[{\314\0\0\0\20\0\0\0\10\0\0\0\377\377\377\377, 65535}], msg_controllen=0, msg_flags=0}, 0) = 16 poll([{fd=4, events=POLLIN}], 1, 0)     = 0 (Timeout) fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 16), ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f86e817a000 write(1, [exited]\n, 9[exited] )               = 9 getppid()                               = 13668 fcntl(0, F_GETFL)     = 0x8002 (flags O_RDWR|O_LARGEFILE) fcntl(0, F_SETFL, O_RDWR|O_LARGEFILE)   = 0 exit_group(0)                           = ?+++ exited with 0 +++
tmux exits immediately after starting
tmux