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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-26 16:38:00 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-26 16:38:00 -0400 |
| commit | 97d5c458cfa039d857301e1ca7d5af3beb37131d (patch) | |
| tree | b460cd850d0537eb71806ba30358840377b27688 /static/plan9-4e/man2/getenv.2 | |
| parent | b89dc2331a50c63f8b33272a5c4c61ab98abdaa3 (diff) | |
build: Better Build System
Diffstat (limited to 'static/plan9-4e/man2/getenv.2')
| -rw-r--r-- | static/plan9-4e/man2/getenv.2 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/static/plan9-4e/man2/getenv.2 b/static/plan9-4e/man2/getenv.2 new file mode 100644 index 00000000..339acb82 --- /dev/null +++ b/static/plan9-4e/man2/getenv.2 @@ -0,0 +1,44 @@ +.TH GETENV 2 +.SH NAME +getenv, putenv \- access environment variables +.SH SYNOPSIS +.B #include <u.h> +.br +.B #include <libc.h> +.PP +.nf +.B +char* getenv(char *name) +.br +.B +int putenv(char *name, char *val) +.fi +.SH DESCRIPTION +.I Getenv +reads the contents of +.BI /env/ name +(see +.IR env (3)) +into memory allocated with +.IR malloc (2), +0-terminates it, +and returns a pointer to that area. +If no file exists, 0 +is returned. +.PP +.I Putenv +creates the file +.BI /env/ name +and writes the string +.I val +to it. The terminating +.B 0 +is not written. +If the file value cannot be written, \-1 is returned. +.SH SOURCE +.B /sys/src/libc/9sys +.SH SEE ALSO +.IR env (3) +.SH DIAGNOSTICS +Sets +.IR errstr . |