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| author | rsc <devnull@localhost> | 2004-04-10 18:53:55 +0000 |
|---|---|---|
| committer | rsc <devnull@localhost> | 2004-04-10 18:53:55 +0000 |
| commit | cfa37a7b1131abbab2e7d339b451f5f0e3198cc8 (patch) | |
| tree | a7fe52416e9d27efe2af2d54910112674c0fd7c6 /man/man3/getenv.3 | |
| parent | 08df2a433e69c94f9db002c83380cb2b693fee60 (diff) | |
| download | plan9port-cfa37a7b1131abbab2e7d339b451f5f0e3198cc8.tar.gz plan9port-cfa37a7b1131abbab2e7d339b451f5f0e3198cc8.tar.bz2 plan9port-cfa37a7b1131abbab2e7d339b451f5f0e3198cc8.zip | |
Lots of man pages.
Diffstat (limited to 'man/man3/getenv.3')
| -rw-r--r-- | man/man3/getenv.3 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/man/man3/getenv.3 b/man/man3/getenv.3 new file mode 100644 index 00000000..2d6b90c4 --- /dev/null +++ b/man/man3/getenv.3 @@ -0,0 +1,44 @@ +.TH GETENV 3 +.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 . |