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Top Forums Shell Programming and Scripting How to change a file's content by row? Post 302375923 by Scrutinizer on Monday 30th of November 2009 06:32:57 AM
Old 11-30-2009
You could write the result to a new file and then mv that new file to the old file.
 

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tis_write_lock(3)					     Library Functions Manual						 tis_write_lock(3)

NAME
tis_write_lock - Acquires the specified read-write lock for write access. LIBRARY
Standard C Library (libc.so, libc.a) SYNOPSIS
#include <tis.h> int tis_write_lock( tis_rwlock_t *lock); STANDARDS
None PARAMETERS
Address of the read-write lock to be acquired for write access. DESCRIPTION
This routine acquires a read-write lock for write access. This routine waits for any other active locks (for either read or write access) to be unlocked before this acquisition request is granted. This routine returns when the specified read-write lock is acquired for write access. RETURN VALUES
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The value specified by lock is not a valid read-write lock. ERRORS
None RELATED INFORMATION
Functions: tis_read_lock(3), tis_read_trylock(3), tis_read_unlock(3), tis_rwlock_destroy(3), tis_rwlock_init(3), tis_write_trylock(3), tis_write_unlock(3) Manuals: Guide to DECthreads and Programmer's Guide delim off tis_write_lock(3)
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